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Superior Highridge Birch Nature-Flame Gas Logs
Superior Highridge Birch 24" Nature-Flame Vent-Free Gas Log Set LNF24HB
The Superior Highridge Birch 24" Nature-Flame Vent-Free Gas Log Set LNF24HB 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 Natural Gas or Propane/LP configurations with millivolt or electronic controls, the system provides up to 39,000 BTU/hr.
Your usable firebox measures at least 29" front width × 22" rear width × 19" height × 15" depth.
You have selected the correct Natural Gas or Propane/LP configuration.
You have selected the appropriate millivolt or electronic control configuration.
The fireplace and installation location satisfy the applicable Superior requirements.
Adequate combustion and ventilation air can be provided.
Any required optional controls or vented-use accessories are identified before ordering.
Do Not Assume
That every fireplace wider than 24" can accommodate the system.
That fireplace width alone establishes compatibility.
That Natural Gas and Propane/LP configurations have the same input range.
That millivolt and electronic configurations include identical controls.
That optional controls or a vented-use damper clamp are automatically included.
That Highridge Birch logs can be freely rearranged.
Minimum-height requirement: The LNF24HB requires at least 19" of usable firebox height. A fireplace that is only 18" high does not meet the supplied minimum requirement.
Highridge Birch 24" Overview
The 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.
Its 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.
Superior'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.
Superior Highridge Birch 24" at a Glance
Product Type
Vent-Free Gas Log Set
Log Style
Highridge Birch
Log Material
Concrete / Cast Refractory
Fuel Options
Natural Gas or Propane/LP
Control Options
Millivolt or Electronic
Product Number
43593110817
Firebox Fit Requirements
A 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.
Firebox Measurement
Minimum Required
Front Width
29"
Rear Width
22"
Height
19"
Depth
15"
Measure the usable interior. Do not substitute the overall exterior fireplace dimensions, decorative surround, or nominal opening size for the usable firebox measurements.
Do not install the 24" Nature-Flame system if the firebox is smaller than any of the stated minimum dimensions.
Key Highridge Birch & Nature-Flame Features
24" Birch-Style Presentation
A broader Highridge Birch log arrangement designed for larger qualifying fireboxes.
The unique burner creates random flame movement and tall natural-yellow flames.
Flickering Ember Bed
The ember-bed effect adds glow and depth beneath the Highridge Birch logs.
99% Heating Efficiency
Nature-Flame models are heater rated at 99% heating efficiency.
Traditional Grate Appearance
A wood-burning-style grate supports the traditional wood-fire presentation.
Highridge Birch LNF24HB Log Placement
The LNF24HB Highridge Birch logs must be installed in the positions specified by Superior. The logs should not be modified or arranged according to personal preference.
Superior's dedicated placement instructions cover LNF18HB, LNF24HB, and LNF30HB, but the correct placement sequence for the LNF24HB 24" set must be followed rather than assuming another size uses the same arrangement.
Do not alter the approved log or ember arrangement. Do not place ember material over burner ports. Correct placement is required for the intended flame pattern and safe operation.
Fuel, Control & BTU Configuration
The 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.
Natural Gas
Natural Gas configurations operate from 28,000 to 39,000 BTU/hr.
Propane / LP
Propane/LP configurations operate from 25,000 to 36,000 BTU/hr.
Millivolt Control
The millivolt Nature-Flame configuration is remote ready. Compatible optional remote and wall controls can be added according to the preferred operating method.
Electronic Control
The electronic configuration includes the EcoFlow Touch Screen Multi-Function Remote with Manual and Thermostat modes, On/Off control, and three flame-height settings.
Select the correct fuel before ordering. Natural Gas and Propane/LP configurations have different input ratings and must match the fuel supply at the installation location.
Highridge Birch 24" BTU Ratings
Control
Fuel
Input Rating
Millivolt
Natural Gas
28,000–39,000 BTU/hr
Millivolt
Propane/LP
25,000–36,000 BTU/hr
Electronic
Natural Gas
28,000–39,000 BTU/hr
Electronic
Propane/LP
25,000–36,000 BTU/hr
Maximum output differs by fuel. Natural Gas reaches up to 39,000 BTU/hr, while Propane/LP reaches up to 36,000 BTU/hr.
Fireplace & Venting Compatibility
Correct firebox dimensions are only one part of determining whether the Highridge Birch 24" is appropriate for a fireplace.
The 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.
Do not assume compatibility based only on log size or fireplace width. Verify the complete installation requirements before ordering.
Vent-Free Operation
During approved vent-free operation, the system uses combustion air from the installation space rather than relying on a conventional chimney for normal venting.
Adequate combustion and ventilation air must be provided according to the applicable installation instructions.
Installation restrictions can vary. Vent-free appliances may be subject to state, local, and installation-specific requirements. Confirm that the intended installation is permitted.
Vented Operation
The Nature-Flame series is also listed for qualifying vented fireplace applications.
For applicable vented operation, a damper clamp is required to prevent the chimney damper from closing completely and maintain the required permanent flue opening. The damper clamp is sold separately.
Compatible Controls
Control compatibility depends on the selected burner and control configuration. Confirm compatibility before ordering optional controls.
Control
Application
RCKIT4001
On/Off Remote for compatible millivolt models
TRC
Thermostat On/Off Remote for compatible millivolt models
GWMT1
Wall-Mount Thermostat Control Kit
EcoFlow Touch Screen Multi-Function Remote
Included with applicable electronic models
Control distinction: Millivolt models are remote ready for compatible optional controls. Electronic models include the EcoFlow touchscreen remote according to the supplied product information.
Installation & Safety Requirements
Installation 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.
Verify Before Installation
Correct 24" Nature-Flame burner configuration.
Correct Natural Gas or Propane/LP fuel configuration.
Minimum 29" front firebox width.
Minimum 22" rear firebox width.
Minimum 19" firebox height.
Minimum 15" firebox depth.
Required clearances.
Adequate combustion and ventilation air.
Gas-supply requirements.
Fireplace compatibility.
Applicable codes and installation requirements.
Correct LNF24HB Highridge Birch log placement.
Do Not
Operate with an incorrect fuel configuration.
Install if any minimum firebox dimension is not met.
Operate with the wrong log arrangement.
Block burner ports with ember material.
Ignore required combustion or ventilation air.
Assume illustrations are to scale when checking dimensions or clearances.
Hot-surface warning: The Highridge Birch Nature-Flame system becomes extremely hot during operation. Maintain required clearances and keep combustible materials away from the appliance.
The manufacturer notes that elevation, fuel choice, home design and insulation, ceiling height, accessories, and appliance location can affect heating performance and flame appearance.
Superior Highridge Birch LNF24HB Specifications
Product
Brand
Superior Fireplaces
Series
Nature-Flame
Model
LNF24HB
Product Number
43593110817
Log Style
Highridge Birch
Product Type
Vent-Free Gas Log Set
Construction & Size
Log Size
24"
Burner Size
24"
Log Material
Concrete / Cast Refractory
Fuel, Controls & Performance
Fuel Options
Natural Gas or Propane/LP
Control Options
Millivolt or Electronic
Maximum Input
Up to 39,000 BTU/hr
Natural Gas Input
28,000–39,000 BTU/hr
Propane/LP Input
25,000–36,000 BTU/hr
Heating Efficiency
99%
Vented Application
Yes, with required damper clamp sold separately
Minimum Firebox Dimensions
Front Width
29"
Rear Width
22"
Height
19"
Depth
15"
Warranty
Warranty
5-Year Limited Warranty
Manufacturer Manuals & Technical Resources
Review the documentation applicable to the selected fuel and control configuration before installation, operation, service, or log placement.
The Superior Highridge Birch 24" LNF24HB 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.
The primary purchase checks are the 29" front width × 22" rear width × 19" height × 15" depth minimum firebox dimensions, 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.
Do 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.
Superior Highridge Birch LNF24HB FAQs
What size fireplace is required for the Superior Highridge Birch 24"?
The 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.
How many BTUs does the Superior Highridge Birch 24" produce?
Natural 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.
Should I choose millivolt or electronic controls?
Choose 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.
Does the Superior Highridge Birch 24" include a remote?
The electronic configuration includes the EcoFlow Touch Screen Multi-Function Remote. Millivolt configurations are remote ready, but compatible remote or wall controls are optional.
Can the Highridge Birch 24" be used in a vented fireplace?
Yes, in a qualifying vented fireplace application. A damper clamp is required for the applicable vented installation and is sold separately.
Can I install the Highridge Birch 24" in a fireplace that is only 18" high?
No. The system requires a minimum usable firebox height of 19", along with at least 29" front width, 22" rear width, and 15" depth.
Can I rearrange the LNF24HB Highridge Birch logs?
No. 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.
What optional millivolt controls are identified for this system?
The 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.
Final Before-Order Checklist
Confirm
Model: LNF24HB.
Product number: 43593110817.
You want the 24" Highridge Birch log presentation.
The usable firebox satisfies all four minimum dimensions.
The correct Natural Gas or Propane/LP configuration is selected.
The correct millivolt or electronic control type is selected.
The applicable BTU range is understood.
Optional versus included controls are understood.
The fireplace and installation location satisfy Superior's requirements.
Adequate combustion and ventilation air can be provided.
Any required vented-use accessories are identified.
Qualified installation requirements can be met.
Avoid These Ordering Errors
Assuming a fireplace wider than 24" is automatically large enough.
Ignoring the 19" minimum firebox height.
Using exterior fireplace dimensions instead of usable interior dimensions.
Ordering the wrong fuel configuration.
Assuming Natural Gas and Propane/LP have the same BTU range.
Assuming optional millivolt controls are included.
Assuming a damper clamp is included for vented operation.
Changing the LNF24HB log or ember placement.
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Great customer service for hard to get refractory brick back
I was able to get a Novus 33 in brick refractory back for my NG Novus fireplace insert. Novus is a high demand item and Flame authority was only supplier without a huge delay from manufacturer. I recommend them for all fireplace needs.
Scott DiBert
10/07/2023
Great service and great product
Tia Short
03/29/2023
Nice and easy
Product is great, free shipping was good, and unpacking and installing it was easy. Customer support was great too, both with the sales and shipping carrier. After much research…the Modern Flames Redstone is the one.
Ken Shuba
02/14/2023
A+ = both the sale, the shipping process, and the product
A+ = both the sale, the shipping process, and the product
Scott Werley
12/26/2022
Great Customer service
I purchased burner and fire box. I emailed and spoke with Jim . He helped me from start to finish. Great service
Scott G
12/19/2022
Beautiful Mantel
The mantel required a little bit of sanding and prep before painting, but was good quality. Flame Authority did an excellent job shipping and it arrived by freight in perfect condition.
The mantel assembled well. I ended up using some construction adhesive to glue the legs on to make it a little more sturdy. I cut pocket holes in the top to attach it to the wall.
Very happy with our purchase!
Ryan George
12/17/2022
Blaze Pro Portable Grill
I shopped for a grill for two people. I want it to last for ten years or more. I want it to get really hot for grilling steaks after they have been cooled sous vide. I want it to be useful also for lower temp cooking. This Blaze grill is perfect for me and my wife. Our purchase through Flame Authority was completed with no problems. I am totally satisfied with this grill and highly recommend it for anyone with similar needs.
Mary Ann
10/23/2022
Came as advertised and without any delays. Arrived quickly. No issues and would buy from flame authority again.
Brian McDonald
08/03/2022
I wanted to make sure of the size and features of this oven. I called Flame Authority and Mary answered the call. She gave me all the details and I was really amazed coz she really knows what she is selling. Expert with sales and communication. Thumbs Up!
James N. Johnson
07/12/2022
Great heating stove
I bought the stove couple weeks ago and ended up having a chance running it a few days I am very pleased with the outcome of the amount of heat it gets out also with the amount of hours it burns at least eight hours. I would recommend this for anyone who is looking for hours of heat output. At first when I bought it I didn’t quite know if mine hopes will be for filled but now they are happy with it. I would recommend this to anyone as a trusted tester of it I am very pleased of the outcome it rains.!
Vladimir Novik
04/25/2022
Nice company to work with and an even better fireplace for our home
Nice , polite and helpful, when you would call with questions.Fireplace looks nice and throws a decent amount of heat , just a bit of a delay in delivery. Ended up getting it End of January, right before guests arrived. But still only took 3 weeks to get. Thank you Flame Authority !!!
Chelyn Andrea
02/02/2022
Stunning Fireplace
I didn't expect to have this fireplace earlier than the lead time they promised. It looks stunning in my living room and now we are prepared for the upcoming winter season! I am happy with all the updates! Customer service representatives keep on updating me with the process of my order until delivery they are checking it for you! 10 stars for Flame Authority!
sample
09/27/2021
Beautiful
Simply beautifully designed. Very efficient. Looks gorgeous in our mid century modern home in a corner space. Will save us $$$ on electric heat bills and is easy to clean with fireplace glass cleaner.
Hayley Severns
09/03/2021
Great Customer Service
I believe it was David Novak that helped me. Someone ALWAYS answered the phone and located this burner when I couldn't find it anywhere else. It almost seemed too good to be true. But it wasn't. The burner is now nestled in my new outdoor kitchen and am very pleased.
Olivia Pierce
06/29/2021
Thank you for a very smooth transaction. the remote is very useful. It is very easy to install
