SKU:LMFP108
Mason-Lite 108" Linear Gas Fireplace - Dual 12" B-Vent
Mason-Lite 108" Linear Gas Fireplace - Dual 12" B-Vent
Linear Burner
-- Please Select --
96 in. Natural Gas Alpine Linear Burner for LMFP108 Fireplace
96 in. Liquid Propane Alpine Linear Burner for LMFP108 Fireplace
No, Thank You
Couldn't load pickup availability
- Free Shipping on Orders Over $300
- Same-Day Order Processing
Looking for a contemporary style for your new fireplace?
Look no further than Mason-Lite. Mason-Lite provides safe, yet aesthetically beautiful, linear fireplaces for your indoor and outdoor living space.
Linear fireplaces have become so popular that Mason-Lite has standardized the most common requests – 48”, 60”, 72”, 84”, 96”, 108″ and 120” – designed to use single or dual 12” B-vent chimney. However, this certainly does not limit you from using Class A chimney nor from choosing Custom widths, see-throughs, corners, or any other linear design. In fact, you can also choose whether you want a flush hearth or a trough designed for use with Mason-Lite’s optional Opalescence Linear Burner w/LED lighting or Golden Blount Alpine Burner.
Vent Free Linear fireplaces are available in sizes 24″, 36″, 48″, 60″. These are with a trough designed for our Vent Free Opalescence Linear Burner.
Why Choose Mason-Lite:

What's Included
- 108" Linear Gas Fireplace - Dual 12" B-Vent
Features
![]() |
Lightweight construction |
![]() |
BTUs starting at 85,000 to 200,000, depending on fireplace size |
![]() |
Limited Lifetime warranty |
![]() |
USA and Canada approved |
The benefits are indisputable
- Class A chimney accepted
- ANSI Z21.50 compliant
- Glassdoor tested & listed
- Square sides - 90º angle in rear corners
- Choice of flush hearth or burner trough
- Units available with & without burner trough
- BTUs starting at 85,000 to 200,000, depending on model
- Standard sizes are designed to use single or dual 12” B-vent chimney
- Available with Golden Blount Alpine Burner & Warming Trends Crossfire Burner
- Custom widths also available including, but not limited to, corners & see-throughs (meet NFPA211 requirements)
- Modular Pre-cast fireplaces reduce labor and assembly time
- Made in the U.S.A
Specifications
Model | LMFP108 |
Dimension A | 121" |
Dimension B | 111" |
Dimension C | 108" |
Dimension D | 105" |
Framing Dimension (Non-combustible floor system) | 126" (W) x 40.5" (H1) x 64.25" (H2) |
Floor Area | 122" x 28" (23.7 ft²) |
H-Burner BTU/HR | 180,000 |
Gas Log Burner BTU/HR | 155,000 |
Mortar, Rebar, and Ready Mix Concrete | 330 lbs. |
Weight | 2987 lbs. |
Flue | (2) 12” Ø |
Style | Contemporary |
Installation Type | Flush Installation / Corner / Internal Wall / Full Projection |
Certification | ANSI Z21.50 compliant |
Warranty | Limited lifetime warranty |
Dimensions
*NOTE: Firebricks Panel is not included in any custom*
Warranty
Lifetime Limited Warranty
MASON-LITE FIREPLACE
Masonry Fireplaces Industries, Inc. (MFI) warrants all Mason-Lite Fireplaces to be free from defects in materials that adversely affect fireplace performance for the lifetime of the product from the date of purchase, subject to the terms and conditions of this limited warranty.
MFI does not warrant accessory chimney, outside air ducts and devices not manufactured by MFI.
This warranty covers only products manufactured by MFI, specifically the modular concrete firebox, and NO WARRANTY, EXPRESS OR IMPLIED, EXTENDS TO ANY OF THE HARDWARE, FOUNDATION, VENTING, DUCTS, OR ACCESSORIES. THIS WARRANTY DOES NOT COVER DRAFTING, SMOKING, OR SOOTING OF THE FIREPLACE SYSTEM. Factors beyond the manufacturer’s control affect drafting, smoking, and sooting and MFI cannot guarantee these aspects of performance.
Coverage under this warranty is subject to the following conditions and exclusions:
- This warranty is null and void when the fireplaces are not installed pursuant to the installation instructions provided by MFI or local building codes have not been followed completely.
- Glass is warranted against thermal breakage only and only on models that are manufactured by MFI with a glass front. On Direct Vent models the safety glass or safety screen must be kept in front of this glass when fireplace is in use. Safety screen must be used on all models when in use.
- This warranty does not apply to any component or part that shows evidence of misuse, abuse, improper installation, accident or lack of regular maintenance. MFI is not responsible for misuse or mishandling of component parts.
- This warranty does not apply to any damage sustained to the appliance while in transit.
- Neither MFI, nor any affiliate thereof, is responsible for any labor costs or indirect costs incurred for the replacement of defective components. Any covered component that, in our judgment, is defective shall be repaired, replaced or refunded at MFI’s option.
- Nothing in this warranty makes MFI, or any affiliate thereof, liable in any respect for any injury or damage to the building or structure in which the fireplace has been installed or to the persons or property therein arising out of the use, misuse, or installation of properly manufactured MFI products.
- The fireplace must be used in accordance with operating instructions. The grate or andirons must be installed when using the fireplace.
NEITHER MFI, NOR ANY AFFILIATE THEREOF, SHALL BE HELD LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES OR EXPENSES ARISING OUT OF THE USE OF THE FIREPLACE. ALL SUCH DAMAGES AND EXPENSES ARE HEREBY EXCLUDED. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you.
If a component is found to be defective under the terms of this warranty, the party this warranty is extended to shall notify MFI in writing, by registered mail, within thirty (30) days following the discovery of the defect within the lifetime warranty period. The letter shall include proof of purchase and state the (1) date of purchase, model number and serial number ; (2) place of purchase; (3) address of installation; (4) name, address and phone number of the homeowner; and (5) a brief description of the defect.
This warranty applies only to those fireplaces installed in the continental United States, Alaska and Canada. If any part of this warranty is found to be unenforceable, the remaining parts shall remain in force and effect.
THE FOREGOING WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ALL OTHER WARRANTIES, TERMS OR CONDITIONS, EXPRESS OR IMPLIED EITHER IN FACT OR BY OPERATION OF LAW. MFI HEREBY DISCLAIMS ALL GUARANTEES AND WARRANTIES, EXPRESS OR IMPLIED, BEYOND THE WARRANTIES SET FORTH HEREIN, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you.
Revision date: 1/29/2015
Documents & Files
Videos
LMFP72 Linear Fireplace
Mason-Lite MGFP Burner and Logs
Mason-Lite Brick Panel Drystack
True Firebrick Panels Installation
Steel Throat Damper Installation
Frequently Asked Questions
Do I have to use B-vent chimney on linear style fireplaces?No. You may use Class-A UL103 listed chimney as an option. |
Do multi-sided linear fireplaces need power venting?In many cases this is necessary. The Mason-Lite team can help determine when fans are necessary. When in doubt, we highly recommend you pre-wire for power venting. |
Do Mason-Lite linear fireplaces have brick panel options?We can accommodate in limited sizes only. Otherwise, you will need to have the firebrick hand-laid by a mason. |
Do I need an angle-iron?Yes. You will need to buy it locally. Our Mason-Lite team can help you determine the correct size. |
Do you have burner options for your linear fireplaces?Yes, please check out our Opalescence products |





