Skip to content

Black Friday Came Early 🔥 Save Big + Extra 5 percent Off with Code BFCM2025.

Black Friday Came Early 🔥 Save Big + Extra 5 percent Off with Code BFCM2025. Premium Fireplaces and Heating. Claim Your Deal →

NO SALES TAX & FREE SHIPPING On Most Orders!

NO SALES TAX & FREE SHIPPING On Most Orders! Need assistance? Talk to an Expert at (800) 923-4556 Or Chat With Us!

Flame Authority

Search

Search

FIREPLACES

POPULAR BRANDS
Dimplex Empire Stove Empire White Mountain Hearth Majestic Modern Flames Monessen Napoleon Osburn Real Fyre Simplifire Superior Fireplaces View All ❱❱

FIREPLACES
Gas Fireplaces Electric Fireplaces Wood Burning Fireplaces Fireplace Burners Fireplace Accessories

OUTDOOR FIREPLACES
Outdoor Vent Free Fireplaces Outdoor Gas Fireplaces Outdoor Wood Burning Fireplaces Outdoor See Through Fireplaces View All

FIREBOXES & INSERTS
Fireplace Inserts Fireboxes View All

STOVES
Gas Stoves Wood-Burning Stoves Pellet Stoves Stove Accessories View All

LOG SETS
Vent Free Gas Logs Set Vented Gas Log Sets View All

FIREPLACE & HEARTH ACCESSORIES
Fireplace Accessories Hearth Accessories Mantels Surrounds View All
FIRE PITS

POPULAR BRANDS
Empire White Mountain Hearth Firegear Fire Garden Fire Pit Art Grand Canyon HPC Fire The Outdoor Plus View All

FIRE PITS
Fire Pits Fire Pit Tables Fire Pit Inserts Fire Pit Bowls View All

FIRE PIT BURNER SYSTEMS AND KITS
Linear Burners H Burners Rectangular Burners Penta Burners Round Burners T Burners View All

ACCESSORIES
Fire Pit Accessories
HEATERS

Popular Brands
Bromic Buck Stove Dimplex Empire Heating Systems Infratech IR Energy Patio Comfort Schwank Sunpak SunStar

Heaters By Product Type
Floor Furnaces Infrared Heaters Outdoor Heaters Room Heaters Wall Furnaces

Heaters By Installation Type
Built-In Ceiling Mounted Drop Pole Mounted Flush Mounted Freestanding Post Mounted Recessed Wall Mount

BTU Range
0 - 20,000 BTU 20,000 - 40,000 BTU 40,000 - 60,000 BTU 60,000 - 80,000 BTU
BBQ GRILLS

GRILLS TYPE
Built-In Grills Hybrid Grills Portable Grills Post Mount Grills Kamado Grills Freestanding Grills Pellet Grills BBQ Islands View All

GRILLS BY FUEL TYPE
Gas Grills Electric Grills Charcoal Grills Propane Grills View All

GRILL ACCESSORIES
Grill Burners Doors, Drawers & Cabinets Grill Covers Grills Carts Coolers Vent Hoods View All

GRIDDLES
Gas Griddles Electric Griddles View All
OUTDOOR KITCHEN

ISLAND GRILLS
Mont Alpi Fire Magic American Outdoor Grill (AOG) View All

ISLAND COMPONENTS
Built-In Grills Burners Doors, Drawers, Cabinets Vent Hoods View All

COOLERS
Beverage Centers Wine Coolers Refrigerators Ice Makers View All

PIZZA OVENS
Gas Pizza Ovens Wood Burning Pizza Ovens View All
PRO-TRADE
Learning Center
Shop All

Search

Goes great with

39" Gas B-Vent Firebox Kits - Mason-Lite Flame Authority

39" Gas B-Vent Firebox Kits - Mason-Lite Flame Authority

Mason-Lite 39" Gas B-Vent Firebox Kits MGFP39

Sale price $9,367³⁵ $9,367.35 Regular price $12,658⁵⁸ $12,658.58 Save 26%

44" Vent Free Firebox Kit - Mason-Lite Flame Authority

44" Vent Free Firebox Kit - Mason-Lite Flame Authority

Mason-Lite 44 inch Vent Free Firebox Kit MFP44VF

Sale price $4,013¹⁰ $4,013.10 Regular price $5,423¹¹ $5,423.11 Save 26%

44" Pre-Cast Masonry Firebox Kit - Mason-Lite Flame Authority

44" Pre-Cast Masonry Firebox Kit - Mason-Lite Flame Authority

Mason-Lite 44" Pre-Cast Masonry Firebox Kit MFP44

Sale price $5,056⁵¹ $5,056.51 Regular price $6,833¹² $6,833.12 Save 26%

44" Gas B-Vent Firebox Kits - Mason-Lite Flame Authority

Mason-Lite 44 inch Gas B-Vent Firebox Kits MGFP44

Sale price $10,269¹³ $10,269.13 Regular price $13,877²⁰ $13,877.20 Save 26%

Add order note Close

Subtotal

$0.00

Shipping, taxes, and discount codes calculated at checkout.

Your cart is currently empty.

PRO-TRADE
Learning Center
Shop All

Get 5% off your first purchase.

Sign up today, and we'll send you a 5% discount code toward your first purchase.

Enter your email Subscribe

Facebook
X
Pinterest
Instagram
YouTube

Home / Collections /

Built-in Firebox Fireplaces

104 products

American Hearth (12)
Astria (15)
Buck Stove (2)
Dimplex (25)
Heatmaster (6)
Kingsman (5)
Majestic (1)
Mason-Lite (11)
Monessen (3)
Superior Fireplaces (10)
The Bio Flame (14)

Fireplaces (104)

Fireboxes (104)
Water Vapor Fireplaces (2)

Indoor (98)
Outdoor (28)

Electric (30)
Ethanol (14)
Liquid Propane (32)
Natural Gas (60)

Linear (3)
Portrait (8)
See Through (14)
Single Sided (77)

Built-In (103)
Recessed (7)
Wall Mounted (1)

0-20000 (22)
20000-40000 (18)
40000-60000 (4)

B-Vent (4)
Direct Vent (1)
Vent Free (94)
Vented (5)

104 products

Sort

39" Gas B-Vent Firebox Kits - Mason-Lite Flame Authority

39" Gas B-Vent Firebox Kits - Mason-Lite Flame Authority

Mason-Lite 39" Gas B-Vent Firebox Kits MGFP39

Sale price $9,367³⁵ $9,367.35 Regular price $12,658⁵⁸ $12,658.58 Save 26%

44" Vent Free Firebox Kit - Mason-Lite Flame Authority

44" Vent Free Firebox Kit - Mason-Lite Flame Authority

Mason-Lite 44 inch Vent Free Firebox Kit MFP44VF

Sale price $4,013¹⁰ $4,013.10 Regular price $5,423¹¹ $5,423.11 Save 26%

44" Pre-Cast Masonry Firebox Kit - Mason-Lite Flame Authority

44" Pre-Cast Masonry Firebox Kit - Mason-Lite Flame Authority

Mason-Lite 44" Pre-Cast Masonry Firebox Kit MFP44

Sale price $5,056⁵¹ $5,056.51 Regular price $6,833¹² $6,833.12 Save 26%

44" Gas B-Vent Firebox Kits - Mason-Lite Flame Authority

Mason-Lite 44 inch Gas B-Vent Firebox Kits MGFP44

Sale price $10,269¹³ $10,269.13 Regular price $13,877²⁰ $13,877.20 Save 26%

43" See-Thru Gas B-Vent Firebox Kits - Mason-Lite Flame Authority

43" See-Thru Gas B-Vent Firebox Kits - Mason-Lite Flame Authority

Mason-Lite 43 inch See-Thru Gas B-Vent Firebox Kits MGFPST43

Sale price $12,361⁴⁹ $12,361.49 Regular price $16,704⁷² $16,704.72 Save 26%

43" Pre-Cast Masonry See-Thru Firebox Kit - Mason-Lite Flame Authority

43" Pre-Cast Masonry See-Thru Firebox Kit - Mason-Lite Flame Authority

Mason-Lite 43 inch Pre-Cast Masonry See-Thru Firebox Kit MFPST43

Sale price $6,060⁹³ $6,060.93 Regular price $8,190⁴⁵ $8,190.45 Save 26%

33" Pre-Cast Masonry Firebox Kit | Mason-Lite Flame Authority

33" Pre-Cast Masonry Firebox Kit | Mason-Lite Flame Authority

Mason-Lite 33" Pre-Cast Masonry Firebox Kit MFP33

Sale price $3,446⁶⁸ $3,446.68 Regular price $4,657⁶⁸ $4,657.68 Save 26%

Monessen Lo-Rider 40" Vent Free Firebox LCUF40

Monessen Lo-Rider 42" Vent Free Firebox LCUF42

from $1,199⁰⁰ from $1,199.00 Regular price $1,566²² $1,566.22 Save 23%

Monessen Lo-Rider 36" Vent Free Firebox LCUF36

Monessen Lo-Rider 36" Vent Free Firebox LCUF36

from $1,119⁰⁰ from $1,119.00 Regular price $1,458¹¹ $1,458.11 Save 23%

Monessen Lo-Rider 32" Vent Free Firebox LCUF32

Monessen Lo-Rider 32" Vent Free Firebox LCUF32

from $1,029⁰⁰ from $1,029.00 Regular price $1,390⁵⁴ $1,390.54 Save 26%

Buck Stove 36 inch Vent Free Gas Firebox NV ZCBB

Buck Stove 36 inch Vent Free Gas Firebox NV ZCBB

Sale price $1,428⁷⁰ $1,428.70 Regular price $1,930⁶⁸ $1,930.68 Save 26%

Buck Stove 42 inch Vent Free Gas Firebox NV 42ZCBB

Buck Stove 42 inch Vent Free Gas Firebox NV 42ZCBB

Sale price $1,563⁹⁰ $1,563.90 Regular price $2,113³⁸ $2,113.38 Save 26%

Dimplex 33-Inch Slim Line Built-In Electric Firebox BFSL33

Dimplex 33-Inch Slim Line Built-In Electric Firebox BFSL33

Dimplex 33-Inch Slim Line Built-In Electric Firebox BFSL33

Sale price $1,099⁹⁹ $1,099.99 Regular price $1,486⁴⁷ $1,486.47 Save 26%

Dimplex Royce 52" Mantel with 28" Electric Firebox

Dimplex Royce 52" Mantel with 28" Electric Firebox

Dimplex Royce 52" Mantel with 28" Electric Firebox

Sale price $2,189⁹⁸ $2,189.98 Regular price $2,959⁴³ $2,959.43 Save 26%

Superior VRT3500 Series 42" Clean Faced Vent-Free Firebox VRT3542

Superior VRT3500 Series 42" Clean Faced Vent-Free Firebox VRT3542

Superior Fireplaces

from $1,259⁰⁰ from $1,259.00 Regular price $1,701³⁵ $1,701.35 Save 26%

Superior VRT3500 Series 36" Clean Faced Vent-Free Firebox VRT3536

Superior VRT3500 Series 36" Clean Faced Vent-Free Firebox VRT3536

Superior Fireplaces

from $1,049⁰⁰ from $1,049.00 Regular price $1,417⁵⁷ $1,417.57 Save 26%

Superior VRT3200 Series 42" Clean Faced Vent-Free Firebox VRT3242

Superior VRT3200 Series 42" Clean Faced Vent-Free Firebox VRT3242

Superior Fireplaces

from $1,209⁰⁰ from $1,209.00 Regular price $1,633⁷⁸ $1,633.78 Save 26%

Superior VRT3200 Series 36" Clean Faced Vent-Free Firebox VRT3236

Superior VRT3200 Series 36" Clean Faced Vent-Free Firebox VRT3236

Superior Fireplaces

from $999⁰⁰ from $999.00 Regular price $1,350⁰⁰ $1,350.00 Save 26%

Superior VRT3200 Series 32" Clean Faced Vent-Free Firebox VRT3232

Superior VRT3200 Series 32" Clean Faced Vent-Free Firebox VRT3232

Superior Fireplaces

from $949⁰⁰ from $949.00 Regular price $1,282⁴³ $1,282.43 Save 26%

Superior VRT3100 Series 42" Clean Faced Vent-Free Firebox VRT3142

Superior VRT3100 Series 42" Clean Faced Vent-Free Firebox VRT3142

Superior Fireplaces

from $1,159⁰⁰ from $1,159.00 Regular price $1,566²² $1,566.22 Save 26%

Superior VRT3100 Series 36" Clean Faced Vent-Free Firebox VRT3136

Superior VRT3100 Series 36" Clean Faced Vent-Free Firebox VRT3136

Superior Fireplaces

from $1,049⁰⁰ from $1,049.00 Regular price $1,417⁵⁷ $1,417.57 Save 26%

Superior VRT3100 Series 32" Clean Faced Vent-Free Firebox VRT3132

Superior VRT3100 Series 32" Clean Faced Vent-Free Firebox VRT3132

Superior Fireplaces

from $949⁰⁰ from $949.00 Regular price $1,282⁴³ $1,282.43 Save 26%

Superior VRT2500 Series 42" Clean Faced Vent-Free Firebox VRT2542WS

Superior VRT2500 Series 42" Clean Faced Vent-Free Firebox VRT2542WS

Superior Fireplaces

Sale price $1,049⁰⁰ $1,049.00 Regular price $1,417⁵⁷ $1,417.57 Save 26%

Superior VRT2500 Series 36" Clean Faced Vent-Free Firebox VRT2536WS

Superior VRT2500 Series 36" Clean Faced Vent-Free Firebox VRT2536WS

Superior Fireplaces

Sale price $899⁰⁰ $899.00 Regular price $1,214⁸⁶ $1,214.86 Save 26%

Dimplex Multi-Fire XHD™ 33" Electric Firebox

Dimplex Multi-Fire XHD™ 33" Electric Firebox

Dimplex Multi-Fire XHD™ 33" Electric Firebox

Sale price $1,474⁹⁹ $1,474.99 Regular price $1,993²³ $1,993.23 Save 26%

Dimplex Revillusion 42" Built-in Electric Firebox 50000241

Dimplex Revillusion 42" Built-in Electric Firebox 50000241

Dimplex Revillusion 42" Built-in Electric Firebox 50000241

Sale price $2,889⁹⁹ $2,889.99 Regular price $3,905³⁹ $3,905.39 Save 26%

Dimplex Revillusion 36" Portrait Built-in Electric Firebox 50000239

Dimplex Revillusion 36" Portrait Built-in Electric Firebox 50000239

Dimplex Revillusion 36" Portrait Built-in Electric Firebox 50000239

Sale price $2,559⁹⁹ $2,559.99 Regular price $3,459⁴⁵ $3,459.45 Save 26%

Dimplex Revillusion 30" Built-in Electric Firebox Weathered Concrete 500002389

Dimplex Revillusion 30" Built-in Electric Firebox Weathered Concrete 500002389

Dimplex Revillusion 36" Built-in Electric Firebox 50000240

Sale price $2,519⁹⁹ $2,519.99 Regular price $3,405³⁹ $3,405.39 Save 26%

Dimplex Revillusion 30" Built-in Electric Firebox Herringbone 500002388

Dimplex Revillusion 30" Built-in Electric Firebox Herringbone 500002388

Dimplex Revillusion 30" Built-in Electric Firebox 50000238

Sale price $2,059⁹⁹ $2,059.99 Regular price $2,783⁷⁷ $2,783.77 Save 26%

Majestic See-Through 36" Direct Vent Gas Fireplace ST-DV36IN

Majestic See-Through 36" Direct Vent Gas Fireplace ST-DV36IN

Majestic See-Through 36" Direct Vent Gas Fireplace ST-DV36IN

Sale price $4,739⁰⁰ $4,739.00 Regular price $6,214⁸⁶ $6,214.86 Save 24%

Kingsman 47-inch Zero Clearance Vent Free Gas Firebox - ZVFCV47

Kingsman 47-inch Zero Clearance Vent Free Gas Firebox - ZVFCV47

$1,339²⁰ $1,339.20

Kingsman 42-inch Zero Clearance Vent Free Gas Firebox - ZVFCV42

Kingsman 42-inch Zero Clearance Vent Free Gas Firebox - ZVFCV42

Kingsman 42-inch Zero Clearance Vent Free Gas Firebox - ZVFCV42

$1,183²⁰ $1,183.20

Kingsman 33-inch Zero Clearance Vent Free Gas Firebox - ZVF33P

Kingsman 33-inch Zero Clearance Vent Free Gas Firebox - ZVF33P

Kingsman 33-inch Zero Clearance Vent Free Gas Firebox - ZVF33P

$820⁸⁰ $820.80

Kingsman 39-inch Zero Clearance Vent Free Gas Firebox - ZVFCV39

Kingsman 39-inch Zero Clearance Vent Free Gas Firebox - ZVFCV39

Kingsman 39-inch Zero Clearance Vent Free Gas Firebox - ZVFCV39

$1,072⁸⁰ $1,072.80

Kingsman 24-inch Zero Clearance Vent Free Gas Firebox - ZVF24

Kingsman 24-inch Zero Clearance Vent Free Gas Firebox - ZVF24

Kingsman 24-inch Zero Clearance Vent Free Gas Firebox - ZVF24

$811⁰⁰ $811.00

The Bio Flame 96-inch Double Sided Built-In Ethanol Firebox

The Bio Flame 96-inch Double Sided Built-In Ethanol Firebox

The Bio Flame 96-inch Double Sided Built-In Ethanol Firebox

from $15,203⁵⁰ from $15,203.50 Regular price $29,358⁸⁶ $29,358.86 Save 48%

The Bio Flame 96-inch Single Sided Built-In Ethanol Firebox

The Bio Flame 96-inch Single Sided Built-In Ethanol Firebox

The Bio Flame 96-inch Single Sided Built-In Ethanol Firebox

from $11,695⁰⁰ from $11,695.00 Regular price $28,720³⁵ $28,720.35 Save 59%

The Bio Flame 84-inch Double Sided Built-In Ethanol Firebox

The Bio Flame 84-inch Double Sided Built-In Ethanol Firebox

The Bio Flame 84-inch Double Sided Built-In Ethanol Firebox

from $10,437⁵³ from $10,437.53 Regular price $24,378⁴⁶ $24,378.46 Save 57%

The Bio Flame 84-inch Single Sided Built-In Ethanol Firebox

The Bio Flame 84-inch Single Sided Built-In Ethanol Firebox

The Bio Flame 84-inch Single Sided Built-In Ethanol Firebox

from $9,695⁰⁰ from $9,695.00 Regular price $25,144⁶⁸ $25,144.68 Save 61%

The Bio Flame 72-inch Double Sided Built-In Ethanol Firebox

The Bio Flame 72-inch Double Sided Built-In Ethanol Firebox

The Bio Flame 72-inch Double Sided Built-In Ethanol Firebox

from $8,295⁰⁰ from $8,295.00 Regular price $16,460⁸⁹ $16,460.89 Save 50%

Previous 1 2 3 Next

POPULAR PRODUCTS

Fireplaces
Grills
Fire Pits & Tables
BBQ Island Grills
Pizza Ovens
Wood-Burning Stoves
Grill Accessories

SHOP WITH CONFIDENCE

Lowest Price Guaranteed
Satisfaction Guaranteed
Privacy Policy
Terms and Conditions
Shipping & Returns
Sitemap
Affiliate Program

WHO WE ARE

About Flame Authority
Contact Us
Why Buy From Us
Knowledge Base
Reviews
[PRO] Trade Program
My account

Get in touch

+1 800 923 4556
Email us
Live chat

Follow us

Facebook
X
Pinterest
Instagram
YouTube

We accept

© 2025 Flame Authority Brands Learning Center Reviews Contact Us Lowest Price Guaranteed Satisfaction Guaranteed [PRO] Trade Program Affiliate Program Powered by Shopify

Built-in Firebox Fireplaces