{"product_id":"superior-highridge-birch-24-vent-free-gas-logs","title":"Superior Highridge Birch 24\" Nature-Flame Vent-Free Gas Log Set","description":"\u003cstyle\u003e\nhtml{scroll-behavior:smooth}\n\n.fa-product-page{\n  --fa-primary:#313652;\n  --fa-gold:#e6ba43;\n  --fa-yellow:#ffe001;\n  --fa-red:#da1816;\n  --fa-green:#4d713d;\n  --fa-light:#f7f7f9;\n  --fa-muted:#62677a;\n  --fa-border:rgba(49,54,82,.14);\n  box-sizing:border-box;\n  max-width:1710px;\n  margin:0 auto;\n  padding:30px 18px;\n  color:#1f2433;\n  background:#fff;\n  font-family:\"DM Sans\",system-ui,-apple-system,BlinkMacSystemFont,\"Segoe UI\",sans-serif;\n  font-size:16px;\n  line-height:1.7\n}\n\n.fa-product-page *,\n.fa-product-page *::before,\n.fa-product-page *::after{\n  box-sizing:inherit\n}\n\n.fa-product-page p{\n  margin:0 0 16px\n}\n\n.fa-product-page ul,\n.fa-product-page ol{\n  margin:0;\n  padding-left:22px\n}\n\n.fa-product-page li{\n  margin-bottom:8px\n}\n\n.fa-product-page a{\n  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font-size:24px\n  }\n\n  .fa-quick-specs{\n    grid-template-columns:1fr\n  }\n\n  .fa-faq-answer{\n    padding-left:0\n  }\n\n  .fa-jump-nav{\n    display:block\n  }\n\n  .fa-jump-nav strong{\n    display:block;\n    margin-bottom:8px\n  }\n\n  .fa-jump-nav a{\n    margin:0 5px 7px 0\n  }\n\n  .fa-spec-table:not(.fa-wide-table){\n    min-width:0\n  }\n\n  .fa-wide-table{\n    min-width:620px\n  }\n}\n\u003c\/style\u003e\n\u003carticle class=\"fa-product-page\"\u003e\u003cheader class=\"fa-hero\"\u003e\u003cspan class=\"fa-product-label\"\u003eSuperior Highridge Birch Nature-Flame Gas Logs\u003c\/span\u003e\n\u003ch2\u003eSuperior Highridge Birch 24\" Nature-Flame Vent-Free Gas Log Set LNF24HB\u003c\/h2\u003e\n\u003cp class=\"fa-hero-description\"\u003eThe \u003cstrong\u003eSuperior Highridge Birch 24\" Nature-Flame Vent-Free Gas Log Set LNF24HB\u003c\/strong\u003e combines detailed birch-style concrete cast refractory logs with Superior's Nature-Flame burner system for tall natural-yellow flames, random flame movement, and a flickering ember bed. Available in \u003cstrong\u003eNatural Gas or Propane\/LP\u003c\/strong\u003e configurations with \u003cstrong\u003emillivolt or electronic controls\u003c\/strong\u003e, the system provides up to \u003cstrong\u003e39,000 BTU\/hr\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv class=\"fa-quick-specs\"\u003e\n\u003cdiv class=\"fa-quick-spec\"\u003e\n\u003cstrong\u003eModel\u003c\/strong\u003e LNF24HB\u003c\/div\u003e\n\u003cdiv class=\"fa-quick-spec\"\u003e\n\u003cstrong\u003eLog \/ Burner Size\u003c\/strong\u003e 24\"\u003c\/div\u003e\n\u003cdiv class=\"fa-quick-spec\"\u003e\n\u003cstrong\u003eMaximum Input\u003c\/strong\u003e Up to 39,000 BTU\/hr\u003c\/div\u003e\n\u003cdiv class=\"fa-quick-spec\"\u003e\n\u003cstrong\u003eHeating Efficiency\u003c\/strong\u003e 99%\u003c\/div\u003e\n\u003cdiv class=\"fa-quick-spec\"\u003e\n\u003cstrong\u003eFuel\u003c\/strong\u003e Natural Gas \/ Propane-LP\u003c\/div\u003e\n\u003cdiv class=\"fa-quick-spec\"\u003e\n\u003cstrong\u003eControls\u003c\/strong\u003e Millivolt \/ Electronic\u003c\/div\u003e\n\u003cdiv class=\"fa-quick-spec\"\u003e\n\u003cstrong\u003eMinimum Firebox\u003c\/strong\u003e 29\"W Front × 22\"W Rear × 19\"H × 15\"D\u003c\/div\u003e\n\u003cdiv class=\"fa-quick-spec\"\u003e\n\u003cstrong\u003eWarranty\u003c\/strong\u003e 5-Year Limited\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/header\u003e\u003cnav class=\"fa-jump-nav\"\u003e\u003cstrong\u003eJump to:\u003c\/strong\u003e \u003ca href=\"#fa-before-buy\"\u003eBefore You Buy\u003c\/a\u003e \u003ca href=\"#fa-fit\"\u003eFit\u003c\/a\u003e \u003ca href=\"#fa-features\"\u003eFeatures\u003c\/a\u003e \u003ca href=\"#fa-fuel-controls\"\u003eFuel \u0026amp; Controls\u003c\/a\u003e \u003ca href=\"#fa-compatibility\"\u003eCompatibility\u003c\/a\u003e \u003ca href=\"#fa-installation\"\u003eInstallation\u003c\/a\u003e \u003ca href=\"#fa-specifications\"\u003eSpecifications\u003c\/a\u003e \u003ca href=\"#fa-downloads\"\u003eManuals\u003c\/a\u003e \u003ca href=\"#fa-faq\"\u003eFAQs\u003c\/a\u003e\u003c\/nav\u003e\n\u003csection class=\"fa-section\" id=\"fa-before-buy\"\u003e\n\u003ch2\u003eBefore You Buy\u003c\/h2\u003e\n\u003cdiv class=\"fa-decision-box\"\u003e\n\u003cdiv class=\"fa-decision-panel fa-best-for\"\u003e\n\u003ch3\u003eVerify These First\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eYour usable firebox measures at least \u003cstrong\u003e29\" front width × 22\" rear width × 19\" height × 15\" depth\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eYou have selected the correct \u003cstrong\u003eNatural Gas or Propane\/LP\u003c\/strong\u003e configuration.\u003c\/li\u003e\n\u003cli\u003eYou have selected the appropriate \u003cstrong\u003emillivolt or electronic\u003c\/strong\u003e control configuration.\u003c\/li\u003e\n\u003cli\u003eThe fireplace and installation location satisfy the applicable Superior requirements.\u003c\/li\u003e\n\u003cli\u003eAdequate combustion and ventilation air can be provided.\u003c\/li\u003e\n\u003cli\u003eAny required optional controls or vented-use accessories are identified before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fa-decision-panel fa-not-for\"\u003e\n\u003ch3\u003eDo Not Assume\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThat every fireplace wider than 24\" can accommodate the system.\u003c\/li\u003e\n\u003cli\u003eThat fireplace width alone establishes compatibility.\u003c\/li\u003e\n\u003cli\u003eThat Natural Gas and Propane\/LP configurations have the same input range.\u003c\/li\u003e\n\u003cli\u003eThat millivolt and electronic configurations include identical controls.\u003c\/li\u003e\n\u003cli\u003eThat optional controls or a vented-use damper clamp are automatically included.\u003c\/li\u003e\n\u003cli\u003eThat Highridge Birch logs can be freely rearranged.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fa-alert fa-alert-danger\"\u003e\n\u003cstrong\u003eMinimum-height requirement:\u003c\/strong\u003e The LNF24HB requires at least \u003cstrong\u003e19\" of usable firebox height\u003c\/strong\u003e. A fireplace that is only 18\" high does not meet the supplied minimum requirement.\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"fa-section\"\u003e\n\u003ch2\u003eHighridge Birch 24\" Overview\u003c\/h2\u003e\n\u003cp class=\"fa-section-intro\"\u003eThe Highridge Birch 24\" is designed for buyers who want the distinctive lighter appearance of birch logs in a broader fireplace presentation, combined with the supplemental heating capability and flame presentation of Superior's Nature-Flame system.\u003c\/p\u003e\n\u003cp\u003eIts concrete cast refractory logs reproduce smooth birch bark, subtle markings, wood-grain texture, and recognizable lighter coloration. The 24-inch size creates a wider presentation than the 18-inch Highridge Birch configuration for larger qualifying fireboxes.\u003c\/p\u003e\n\u003cp\u003eSuperior's Nature-Flame pan burner produces tall natural-yellow flames, random flame movement, and a flickering ember bed, paired with a wood-burning-style grate for a traditional fireplace appearance.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection class=\"fa-section\"\u003e\n\u003ch2\u003eSuperior Highridge Birch 24\" at a Glance\u003c\/h2\u003e\n\u003cdiv class=\"fa-grid\"\u003e\n\u003cdiv class=\"fa-card fa-card-accent\"\u003e\n\u003cspan class=\"fa-card-label\"\u003eProduct Type\u003c\/span\u003e\n\u003cp class=\"fa-card-value\"\u003eVent-Free Gas Log Set\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fa-card fa-card-accent\"\u003e\n\u003cspan class=\"fa-card-label\"\u003eLog Style\u003c\/span\u003e\n\u003cp class=\"fa-card-value\"\u003eHighridge Birch\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fa-card fa-card-accent\"\u003e\n\u003cspan class=\"fa-card-label\"\u003eLog Material\u003c\/span\u003e\n\u003cp class=\"fa-card-value\"\u003eConcrete \/ Cast Refractory\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fa-card fa-card-accent\"\u003e\n\u003cspan class=\"fa-card-label\"\u003eFuel Options\u003c\/span\u003e\n\u003cp class=\"fa-card-value\"\u003eNatural Gas or Propane\/LP\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fa-card fa-card-accent\"\u003e\n\u003cspan class=\"fa-card-label\"\u003eControl Options\u003c\/span\u003e\n\u003cp class=\"fa-card-value\"\u003eMillivolt or Electronic\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fa-card fa-card-accent\"\u003e\n\u003cspan class=\"fa-card-label\"\u003eProduct Number\u003c\/span\u003e\n\u003cp class=\"fa-card-value\"\u003e43593110817\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"fa-section\" id=\"fa-fit\"\u003e\n\u003ch2\u003eFirebox Fit Requirements\u003c\/h2\u003e\n\u003cp class=\"fa-section-intro\"\u003eA 24-inch log-set designation does not mean that every fireplace wider than 24 inches will accommodate the system. The usable firebox must meet all four minimum dimensions.\u003c\/p\u003e\n\u003cdiv class=\"fa-table-wrap\"\u003e\n\u003ctable class=\"fa-spec-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eFirebox Measurement\u003c\/th\u003e\n\u003cth\u003eMinimum Required\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFront Width\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e29\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRear Width\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e22\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e19\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDepth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fa-alert\"\u003e\n\u003cstrong\u003eMeasure the usable interior.\u003c\/strong\u003e Do not substitute the overall exterior fireplace dimensions, decorative surround, or nominal opening size for the usable firebox measurements.\u003c\/div\u003e\n\u003cdiv class=\"fa-alert fa-alert-danger\"\u003e\u003cstrong\u003eDo not install the 24\" Nature-Flame system if the firebox is smaller than any of the stated minimum dimensions.\u003c\/strong\u003e\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"fa-section\" id=\"fa-features\"\u003e\n\u003ch2\u003eKey Highridge Birch \u0026amp; Nature-Flame Features\u003c\/h2\u003e\n\u003cdiv class=\"fa-grid\"\u003e\n\u003cdiv class=\"fa-card fa-card-accent\"\u003e\n\u003cspan class=\"fa-card-label\"\u003e24\" Birch-Style Presentation\u003c\/span\u003e\n\u003cp\u003eA broader Highridge Birch log arrangement designed for larger qualifying fireboxes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fa-card fa-card-accent\"\u003e\n\u003cspan class=\"fa-card-label\"\u003eConcrete Cast Refractory Logs\u003c\/span\u003e\n\u003cp\u003eDetailed smooth bark, subtle markings, wood grain, and natural-looking birch coloration.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fa-card fa-card-accent\"\u003e\n\u003cspan class=\"fa-card-label\"\u003eNature-Flame Pan Burner\u003c\/span\u003e\n\u003cp\u003eThe unique burner creates random flame movement and tall natural-yellow flames.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fa-card fa-card-accent\"\u003e\n\u003cspan class=\"fa-card-label\"\u003eFlickering Ember Bed\u003c\/span\u003e\n\u003cp\u003eThe ember-bed effect adds glow and depth beneath the Highridge Birch logs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fa-card fa-card-accent\"\u003e\n\u003cspan class=\"fa-card-label\"\u003e99% Heating Efficiency\u003c\/span\u003e\n\u003cp\u003eNature-Flame models are heater rated at 99% heating efficiency.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fa-card fa-card-accent\"\u003e\n\u003cspan class=\"fa-card-label\"\u003eTraditional Grate Appearance\u003c\/span\u003e\n\u003cp\u003eA wood-burning-style grate supports the traditional wood-fire presentation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eHighridge Birch LNF24HB Log Placement\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eLNF24HB Highridge Birch logs must be installed in the positions specified by Superior\u003c\/strong\u003e. The logs should not be modified or arranged according to personal preference.\u003c\/p\u003e\n\u003cp\u003eSuperior's dedicated placement instructions cover LNF18HB, LNF24HB, and LNF30HB, but the correct placement sequence for the \u003cstrong\u003eLNF24HB 24\" set\u003c\/strong\u003e must be followed rather than assuming another size uses the same arrangement.\u003c\/p\u003e\n\u003cdiv class=\"fa-alert fa-alert-danger\"\u003e\n\u003cstrong\u003eDo not alter the approved log or ember arrangement.\u003c\/strong\u003e Do not place ember material over burner ports. Correct placement is required for the intended flame pattern and safe operation.\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"fa-section\" id=\"fa-fuel-controls\"\u003e\n\u003ch2\u003eFuel, Control \u0026amp; BTU Configuration\u003c\/h2\u003e\n\u003cp class=\"fa-section-intro\"\u003eThe Highridge Birch 24\" does not have one universal BTU rating. Natural Gas and Propane\/LP have different input ranges, while the control choice determines which operating features are available.\u003c\/p\u003e\n\u003cdiv class=\"fa-grid-2\"\u003e\n\u003cdiv class=\"fa-card fa-card-accent\"\u003e\n\u003ch3\u003eNatural Gas\u003c\/h3\u003e\n\u003cp\u003eNatural Gas configurations operate from \u003cstrong\u003e28,000 to 39,000 BTU\/hr\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fa-card fa-card-accent\"\u003e\n\u003ch3\u003ePropane \/ LP\u003c\/h3\u003e\n\u003cp\u003ePropane\/LP configurations operate from \u003cstrong\u003e25,000 to 36,000 BTU\/hr\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fa-card fa-card-accent\"\u003e\n\u003ch3\u003eMillivolt Control\u003c\/h3\u003e\n\u003cp\u003eThe millivolt Nature-Flame configuration is \u003cstrong\u003eremote ready\u003c\/strong\u003e. Compatible optional remote and wall controls can be added according to the preferred operating method.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fa-card fa-card-accent\"\u003e\n\u003ch3\u003eElectronic Control\u003c\/h3\u003e\n\u003cp\u003eThe electronic configuration includes the \u003cstrong\u003eEcoFlow Touch Screen Multi-Function Remote\u003c\/strong\u003e with Manual and Thermostat modes, On\/Off control, and three flame-height settings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fa-alert\"\u003e\n\u003cstrong\u003eSelect the correct fuel before ordering.\u003c\/strong\u003e Natural Gas and Propane\/LP configurations have different input ratings and must match the fuel supply at the installation location.\u003c\/div\u003e\n\u003ch3\u003eHighridge Birch 24\" BTU Ratings\u003c\/h3\u003e\n\u003cdiv class=\"fa-table-wrap\"\u003e\n\u003ctable class=\"fa-spec-table fa-wide-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eControl\u003c\/th\u003e\n\u003cth\u003eFuel\u003c\/th\u003e\n\u003cth\u003eInput Rating\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMillivolt\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNatural Gas\u003c\/td\u003e\n\u003ctd\u003e28,000–39,000 BTU\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMillivolt\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePropane\/LP\u003c\/td\u003e\n\u003ctd\u003e25,000–36,000 BTU\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eElectronic\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNatural Gas\u003c\/td\u003e\n\u003ctd\u003e28,000–39,000 BTU\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eElectronic\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePropane\/LP\u003c\/td\u003e\n\u003ctd\u003e25,000–36,000 BTU\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fa-alert\"\u003e\n\u003cstrong\u003eMaximum output differs by fuel.\u003c\/strong\u003e Natural Gas reaches up to 39,000 BTU\/hr, while Propane\/LP reaches up to 36,000 BTU\/hr.\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"fa-section\" id=\"fa-compatibility\"\u003e\n\u003ch2\u003eFireplace \u0026amp; Venting Compatibility\u003c\/h2\u003e\n\u003cp class=\"fa-section-intro\"\u003eCorrect firebox dimensions are only one part of determining whether the Highridge Birch 24\" is appropriate for a fireplace.\u003c\/p\u003e\n\u003cp\u003eThe installation must also satisfy the fireplace construction, required clearances, combustion-air, ventilation, fuel-supply, and other requirements stated in the applicable Superior installation and operation documentation.\u003c\/p\u003e\n\u003cdiv class=\"fa-alert\"\u003e\n\u003cstrong\u003eDo not assume compatibility based only on log size or fireplace width.\u003c\/strong\u003e Verify the complete installation requirements before ordering.\u003c\/div\u003e\n\u003ch3\u003eVent-Free Operation\u003c\/h3\u003e\n\u003cp\u003eDuring approved vent-free operation, the system uses combustion air from the installation space rather than relying on a conventional chimney for normal venting.\u003c\/p\u003e\n\u003cp\u003eAdequate combustion and ventilation air must be provided according to the applicable installation instructions.\u003c\/p\u003e\n\u003cdiv class=\"fa-alert\"\u003e\n\u003cstrong\u003eInstallation restrictions can vary.\u003c\/strong\u003e Vent-free appliances may be subject to state, local, and installation-specific requirements. Confirm that the intended installation is permitted.\u003c\/div\u003e\n\u003ch3\u003eVented Operation\u003c\/h3\u003e\n\u003cp\u003eThe Nature-Flame series is also listed for qualifying vented fireplace applications.\u003c\/p\u003e\n\u003cp\u003eFor applicable vented operation, a \u003cstrong\u003edamper clamp is required\u003c\/strong\u003e to prevent the chimney damper from closing completely and maintain the required permanent flue opening. The damper clamp is sold separately.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection class=\"fa-section\"\u003e\n\u003ch2\u003eCompatible Controls\u003c\/h2\u003e\n\u003cp class=\"fa-section-intro\"\u003eControl compatibility depends on the selected burner and control configuration. Confirm compatibility before ordering optional controls.\u003c\/p\u003e\n\u003cdiv class=\"fa-table-wrap\"\u003e\n\u003ctable class=\"fa-spec-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eControl\u003c\/th\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRCKIT4001\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOn\/Off Remote for compatible millivolt models\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTRC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThermostat On\/Off Remote for compatible millivolt models\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGWMT1\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWall-Mount Thermostat Control Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEcoFlow Touch Screen Multi-Function Remote\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIncluded with applicable electronic models\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fa-alert\"\u003e\n\u003cstrong\u003eControl distinction:\u003c\/strong\u003e Millivolt models are remote ready for compatible optional controls. Electronic models include the EcoFlow touchscreen remote according to the supplied product information.\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"fa-section\" id=\"fa-installation\"\u003e\n\u003ch2\u003eInstallation \u0026amp; Safety Requirements\u003c\/h2\u003e\n\u003cp\u003eInstallation and gas connection must follow the applicable Superior installation manual for the selected fuel and control configuration. Installation and service should be performed by a qualified installer, service agency, or gas supplier as specified in the manufacturer documentation.\u003c\/p\u003e\n\u003cdiv class=\"fa-decision-box\"\u003e\n\u003cdiv class=\"fa-decision-panel fa-best-for\"\u003e\n\u003ch3\u003eVerify Before Installation\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCorrect 24\" Nature-Flame burner configuration.\u003c\/li\u003e\n\u003cli\u003eCorrect Natural Gas or Propane\/LP fuel configuration.\u003c\/li\u003e\n\u003cli\u003eMinimum 29\" front firebox width.\u003c\/li\u003e\n\u003cli\u003eMinimum 22\" rear firebox width.\u003c\/li\u003e\n\u003cli\u003eMinimum 19\" firebox height.\u003c\/li\u003e\n\u003cli\u003eMinimum 15\" firebox depth.\u003c\/li\u003e\n\u003cli\u003eRequired clearances.\u003c\/li\u003e\n\u003cli\u003eAdequate combustion and ventilation air.\u003c\/li\u003e\n\u003cli\u003eGas-supply requirements.\u003c\/li\u003e\n\u003cli\u003eFireplace compatibility.\u003c\/li\u003e\n\u003cli\u003eApplicable codes and installation requirements.\u003c\/li\u003e\n\u003cli\u003eCorrect LNF24HB Highridge Birch log placement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fa-decision-panel fa-not-for\"\u003e\n\u003ch3\u003eDo Not\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOperate with an incorrect fuel configuration.\u003c\/li\u003e\n\u003cli\u003eInstall if any minimum firebox dimension is not met.\u003c\/li\u003e\n\u003cli\u003eOperate with the wrong log arrangement.\u003c\/li\u003e\n\u003cli\u003eBlock burner ports with ember material.\u003c\/li\u003e\n\u003cli\u003eIgnore required combustion or ventilation air.\u003c\/li\u003e\n\u003cli\u003eAssume illustrations are to scale when checking dimensions or clearances.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fa-alert fa-alert-danger\"\u003e\n\u003cstrong\u003eHot-surface warning:\u003c\/strong\u003e The Highridge Birch Nature-Flame system becomes extremely hot during operation. Maintain required clearances and keep combustible materials away from the appliance.\u003c\/div\u003e\n\u003cp\u003eThe manufacturer notes that elevation, fuel choice, home design and insulation, ceiling height, accessories, and appliance location can affect heating performance and flame appearance.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection class=\"fa-section\" id=\"fa-specifications\"\u003e\n\u003ch2\u003eSuperior Highridge Birch LNF24HB Specifications\u003c\/h2\u003e\n\u003cdiv class=\"fa-table-wrap\"\u003e\n\u003ctable class=\"fa-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr class=\"fa-spec-group-row\"\u003e\n\u003cth colspan=\"2\"\u003eProduct\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSuperior Fireplaces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNature-Flame\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLNF24HB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e43593110817\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLog Style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHighridge Birch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVent-Free Gas Log Set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"fa-spec-group-row\"\u003e\n\u003cth colspan=\"2\"\u003eConstruction \u0026amp; Size\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLog Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBurner Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLog Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConcrete \/ Cast Refractory\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"fa-spec-group-row\"\u003e\n\u003cth colspan=\"2\"\u003eFuel, Controls \u0026amp; Performance\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFuel Options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNatural Gas or Propane\/LP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eControl Options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMillivolt or Electronic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Input\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 39,000 BTU\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNatural Gas Input\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e28,000–39,000 BTU\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePropane\/LP Input\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25,000–36,000 BTU\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeating Efficiency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e99%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVented Application\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes, with required damper clamp sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"fa-spec-group-row\"\u003e\n\u003cth colspan=\"2\"\u003eMinimum Firebox Dimensions\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFront Width\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e29\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRear Width\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e22\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e19\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDepth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"fa-spec-group-row\"\u003e\n\u003cth colspan=\"2\"\u003eWarranty\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5-Year Limited Warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"fa-section\" id=\"fa-downloads\"\u003e\n\u003ch2\u003eManufacturer Manuals \u0026amp; Technical Resources\u003c\/h2\u003e\n\u003cp class=\"fa-section-intro\"\u003eReview the documentation applicable to the selected fuel and control configuration before installation, operation, service, or log placement.\u003c\/p\u003e\n\u003cdiv class=\"fa-downloads\"\u003e\n\u003ca class=\"fa-download-link\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0354\/7607\/8636\/files\/785692M_Superior-GasLogs-07.24.26-WEB.pdf?v=1790872178\" rel=\"noopener noreferrer\" target=\"_blank\"\u003e Superior Gas Logs Brochure \u003cspan\u003eGeneral Superior gas-log product information\u003c\/span\u003e \u003c\/a\u003e \u003ca class=\"fa-download-link\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0354\/7607\/8636\/files\/785908M-Superior-Nature-FLAME-Smart-Sheet-0726-WEB.pdf?v=1790872180\" rel=\"noopener noreferrer\" target=\"_blank\"\u003e Superior Nature-Flame Series Smart Sheet \u003cspan\u003eNature-Flame specifications and configuration reference\u003c\/span\u003e \u003c\/a\u003e \u003ca class=\"fa-download-link\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0354\/7607\/8636\/files\/Superior-VF-Logs-Complete-Line-Smart-Sheet-0726-WEB.pdf?v=1790872186\" rel=\"noopener noreferrer\" target=\"_blank\"\u003e Superior Vent-Free Gas Logs Complete Line Smart Sheet \u003cspan\u003eComplete Superior vent-free gas-log line reference\u003c\/span\u003e \u003c\/a\u003e \u003ca class=\"fa-download-link\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0354\/7607\/8636\/files\/901335-00_D_SUP_NF18-24_MN-MP_MV_VF_Burner_IICO.pdf?v=1790872232\" rel=\"noopener noreferrer\" target=\"_blank\"\u003e Millivolt Vent-Free Burner Installation \u0026amp; Operation Manual \u003cspan\u003eMillivolt installation, operation, and safety requirements\u003c\/span\u003e \u003c\/a\u003e \u003ca class=\"fa-download-link\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0354\/7607\/8636\/files\/901336-00_D_SUP_NF18-24_EN-EP_VF_Burner_EL_IICO.pdf?v=1790872288\" rel=\"noopener noreferrer\" target=\"_blank\"\u003e Electronic Vent-Free Burner Installation \u0026amp; Operation Manual \u003cspan\u003eElectronic installation, operation, and control requirements\u003c\/span\u003e \u003c\/a\u003e \u003ca class=\"fa-download-link\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0354\/7607\/8636\/files\/901556-00_A_IHP_Log_Placement_Guide_Highridge_Birch_Concrete_INSTR.pdf?v=1790875864\" rel=\"noopener noreferrer\" target=\"_blank\"\u003e Highridge Birch Concrete Log Placement Guide \u003cspan\u003eRequired LNF24HB Highridge Birch log-placement reference\u003c\/span\u003e \u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"fa-expert\"\u003e\n\u003ch2\u003eFlame Authority Product Guidance\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSuperior Highridge Birch 24\" LNF24HB\u003c\/strong\u003e is suited to buyers who want a broader birch-style log presentation with Nature-Flame's tall natural-yellow flames, random flame movement, flickering ember bed, and supplemental heating capability.\u003c\/p\u003e\n\u003cp\u003eThe primary purchase checks are the \u003cstrong\u003e29\" front width × 22\" rear width × 19\" height × 15\" depth minimum firebox dimensions\u003c\/strong\u003e, correct Natural Gas or Propane\/LP configuration, and the choice between remote-ready millivolt operation and an electronic configuration with the included EcoFlow touchscreen remote.\u003c\/p\u003e\n\u003cp\u003eDo not select the product based only on the 24-inch log size. Fireplace construction, clearances, combustion and ventilation air, fuel supply, venting requirements, exact log placement, and professional installation requirements must also be verified.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection class=\"fa-section\" id=\"fa-faq\"\u003e\n\u003ch2\u003eSuperior Highridge Birch LNF24HB FAQs\u003c\/h2\u003e\n\u003cdiv class=\"fa-faq\"\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat size fireplace is required for the Superior Highridge Birch 24\"?\u003c\/summary\u003e\n\u003cdiv class=\"fa-faq-answer\"\u003e\n\u003cp\u003eThe usable firebox must be at least 29\" front width × 22\" rear width × 19\" height × 15\" depth. Do not install the system if any measurement is smaller.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow many BTUs does the Superior Highridge Birch 24\" produce?\u003c\/summary\u003e\n\u003cdiv class=\"fa-faq-answer\"\u003e\n\u003cp\u003eNatural Gas millivolt and electronic configurations are rated at 28,000–39,000 BTU\/hr. Propane\/LP millivolt and electronic configurations are rated at 25,000–36,000 BTU\/hr.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eShould I choose millivolt or electronic controls?\u003c\/summary\u003e\n\u003cdiv class=\"fa-faq-answer\"\u003e\n\u003cp\u003eChoose millivolt for a remote-ready configuration using compatible optional controls. Choose electronic if you want the included EcoFlow touchscreen remote with Manual\/Thermostat modes and three flame-height settings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes the Superior Highridge Birch 24\" include a remote?\u003c\/summary\u003e\n\u003cdiv class=\"fa-faq-answer\"\u003e\n\u003cp\u003eThe electronic configuration includes the EcoFlow Touch Screen Multi-Function Remote. Millivolt configurations are remote ready, but compatible remote or wall controls are optional.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan the Highridge Birch 24\" be used in a vented fireplace?\u003c\/summary\u003e\n\u003cdiv class=\"fa-faq-answer\"\u003e\n\u003cp\u003eYes, in a qualifying vented fireplace application. A damper clamp is required for the applicable vented installation and is sold separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I install the Highridge Birch 24\" in a fireplace that is only 18\" high?\u003c\/summary\u003e\n\u003cdiv class=\"fa-faq-answer\"\u003e\n\u003cp\u003eNo. The system requires a minimum usable firebox height of 19\", along with at least 29\" front width, 22\" rear width, and 15\" depth.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I rearrange the LNF24HB Highridge Birch logs?\u003c\/summary\u003e\n\u003cdiv class=\"fa-faq-answer\"\u003e\n\u003cp\u003eNo. Install the LNF24HB logs only in the positions specified in Superior's Highridge Birch placement instructions. Do not modify the logs or alter the prescribed arrangement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat optional millivolt controls are identified for this system?\u003c\/summary\u003e\n\u003cdiv class=\"fa-faq-answer\"\u003e\n\u003cp\u003eThe supplied content identifies RCKIT4001 for On\/Off remote operation, TRC for thermostat On\/Off remote operation, and GWMT1 as a wall-mount thermostat control kit. Confirm exact compatibility before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"fa-section\"\u003e\n\u003ch2\u003eFinal Before-Order Checklist\u003c\/h2\u003e\n\u003cdiv class=\"fa-decision-box\"\u003e\n\u003cdiv class=\"fa-decision-panel fa-best-for\"\u003e\n\u003ch3\u003eConfirm\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModel: LNF24HB.\u003c\/li\u003e\n\u003cli\u003eProduct number: 43593110817.\u003c\/li\u003e\n\u003cli\u003eYou want the 24\" Highridge Birch log presentation.\u003c\/li\u003e\n\u003cli\u003eThe usable firebox satisfies all four minimum dimensions.\u003c\/li\u003e\n\u003cli\u003eThe correct Natural Gas or Propane\/LP configuration is selected.\u003c\/li\u003e\n\u003cli\u003eThe correct millivolt or electronic control type is selected.\u003c\/li\u003e\n\u003cli\u003eThe applicable BTU range is understood.\u003c\/li\u003e\n\u003cli\u003eOptional versus included controls are understood.\u003c\/li\u003e\n\u003cli\u003eThe fireplace and installation location satisfy Superior's requirements.\u003c\/li\u003e\n\u003cli\u003eAdequate combustion and ventilation air can be provided.\u003c\/li\u003e\n\u003cli\u003eAny required vented-use accessories are identified.\u003c\/li\u003e\n\u003cli\u003eQualified installation requirements can be met.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"fa-decision-panel fa-not-for\"\u003e\n\u003ch3\u003eAvoid These Ordering Errors\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAssuming a fireplace wider than 24\" is automatically large enough.\u003c\/li\u003e\n\u003cli\u003eIgnoring the 19\" minimum firebox height.\u003c\/li\u003e\n\u003cli\u003eUsing exterior fireplace dimensions instead of usable interior dimensions.\u003c\/li\u003e\n\u003cli\u003eOrdering the wrong fuel configuration.\u003c\/li\u003e\n\u003cli\u003eAssuming Natural Gas and Propane\/LP have the same BTU range.\u003c\/li\u003e\n\u003cli\u003eAssuming optional millivolt controls are included.\u003c\/li\u003e\n\u003cli\u003eAssuming a damper clamp is included for vented operation.\u003c\/li\u003e\n\u003cli\u003eChanging the LNF24HB log or ember placement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/article\u003e","brand":"Superior Fireplaces","offers":[{"title":"Default Title","offer_id":46322981994540,"sku":"LNF24HB","price":409.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0354\/7607\/8636\/files\/superior-highridge-birch-18-nature-flame-vent-free-gas-log-set-fireplace-log-sets-lnf18hb-flame-authority-1260678248.webp?v=1790886036","url":"https:\/\/flameauthority.com\/products\/superior-highridge-birch-24-vent-free-gas-logs","provider":"Flame Authority","version":"1.0","type":"link"}