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Recreating the tradition of the hearth and the elegance & romance of the flame
Mason-Lite captures the essence of the fireplace masonry artists have been crafting for centuries. And, with a proven history of superior quality in lightweight fireplaces, it’s no wonder Mason-Lite is one of the industry leaders in modular concrete fireplaces.
At Mason-Lite, we use the finest aggregate materials available to build our lightweight modular concrete fireplaces. One of the main ingredients is pumice, a natural-fired volcanic rock with tremendous strength.
Its lightweight attributes are second to none, and because of its pre-fired beginnings, pumice retains heat better than any natural aggregate available. The best sources for USA pumice are in the western states, convenient to Mason-Lite’s California-based production facilities. Pumice is formed when gas-rich, frothy magma rapidly cools, creating air pockets that contribute to its remarkable lightweight properties.
Because it is only half the weight and half the cost of traditional masonry fireplaces, Mason-Lite Lightweight Masonry Fireplace Systems help you realize your dream of having a fireplace in your master bedroom, upstairs retreat, or even your outdoor patio, without major building infrastructure reinforcement. The restful flicker and comfortable glow of the fire will provide you with years of treasured memories.
With the help of ICC-ES, Mason-Lite developed the structural testing and performance criteria (AC375) that would comply with the International Building Code (IBC), the International Residential Code (IRC), and the International Fuel Gas Code (IFGC). This allows building officials throughout the US to confirm that Mason-Lite fireplaces meet these stringent codes.


| ITEM | DESCRIPTION | QTY |
| 1 | Hearth (left or Right) | 2 |
| 2 | Side Wallwith Outside Alr Kitaccess 04" Hole | 1 |
| 3 | Side Wall | 7 |
| 4 | Lower Side Dome | 2 |
| 5 | Lintel | 2 |
| 6 | Lower Dome Front | 2 |
| 7 | 53 X 4 X 3 X 1/4 Angle Iron | 2 |
| 8 | Upper Side Dome | 2 |
| 9 | Upper Dome Front | 2 |
| 10 | Dome Top | 1 |
| 12 | Rating Plate | 1 |
| 13 | #3 Rebar (03/8") X 36" | 4 |
| 14 | 016" Damper I Anchor Plate • | N/S |
| 15 | Insulation Blanket | N/S |
| PARTS BELOW ARE FOR COMBUSTIBLE FLOOR SYSTEMS | ||
| 16 | Cement Board | N/S |
| 17 | Steel Support Platform 8 Inch High | 1 |
| 18 | Assy,floor Joist Brace | 4 |
| EPA Phase II qualified with PureBurn | |
| 50% Lighter than traditional site-built masonry fireplaces | |
| Superior thermal efficiencies with the highest resistance strength-up to 1700 Degrees Fahrenheit at 28 days | |
| Meets or exceeds federal, state, and local construction building code requirements | |
| Limited Lifetime warranty | |
| USA and Canada approved |
| Item Number | MFPST43 |
| Product Type | Wood and Gas Burning Traditional Fireplace |
| Cater Weight | 1631 lbs |
| Floor Area | (53" x 28") 10.3 sq. ft. |
| Footprint | 53" x 28" |
| Framing Width | 57" |
| Framing Height | 64 1/4" |
| Framing Depth | 28" |
| Mortar and Rebar | 58 lbs. |
| Ready Mix | 100 lbs. |
| Flue Size - Class A | Ø16" |
| Metal Chimney Weight per foot | 12 lbs. |
| Fireplace Weight | 1,423 lbs. |
| Finished Opening Width | 40" |
| Finished Opening Height | 30.5" |
| Finished Opening Depth | 28" |
| Total Unit Height | 62.25" |
| Clearance to Combustibles (Sides and Back) | 2" |
| Installation Type | Flush Installation / Corner / Internal Wall / Full Projection |
| Warranty | Limited lifetime 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:
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
Is the fireplace safe to use?Yes, it has been tested to UL 127 Standard for safety by PFS TECO. The fireplace is listed by PFS testing agency, ICC, (International Code Council) and quality control standards are used in manufacturing.(ESR -2401) |
Can I install the fireplace on a wood floor?Yes: please use the required metal base under unit sold by MFI or use CMU block. Air space clearances range from 6″ to 8″ depending on the model. |
Do I have to install the outside air kit on the fireplace?The local building code will tell you if this is required in your area. The fireplace will work without the outside air kit, although, it is more efficient to use outside air for combustion. |
Do I need firebrick inside the firebox?Yes: MFI can supply firebrick panels for easy installation or a mason can lay firebrick inside the firebox. |
What type of chimney do I use on this fireplace?The fireplace has been tested with both a masonry chimney, manufactured by MFI, or Class A listed metal chimney. The different models can use different diameter metal chimney that will fit almost all installation needs. When installed, the maximum overall height of the Mason-Lite fireplace is 40 feet. The minimum installation height is 14 feet, given that the chimney is straight. If the chimney is not straight, the minimum installation height is 17 feet. |
Do I need a log holder or grate in the fireplace?Yes, you should use a grate to hold the wood in the firebox for better combustion and safety. |
Can I install a mantel or decorative stone or marble on the front of the fireplace?Yes. Just follow the installation instructions for safe installations. |
Can I install decorative gas logs in this wood-burning fireplace?Yes. Follow the manufacturers instructions for safe installation and operation. |
Can I install a log lighter in the fireplace?Yes. Follow the manufacturers instructions for safe installation and operation. |
Can I install a glass door on the fireplace?Yes, Follow the manufacturers instructions and always have doors in the fully open position when using the fireplace. |
Can I install fireplace on upper levels floors of a building?Yes with the lightweight design of MFI fireplaces will work on most applications. You must have a structural engineer determine the load limit of the flooring. |
Can I install a see-thru wood-burning fireplace?Yes. The MFPST43 You will need to install a chimney exhaust type fan in most installations. |
Can I install this fireplace outside?Yes. It is listed for BOTH indoors and outdoors. |
What are the minimum and maximum fireplace heights for the Mason-Lite fireplace?When installed, the maximum overall height of the Mason-Lite fireplace is 40 feet. The minimum installation height is 14 feet, given that the chimney is straight. If the chimney is not straight, the measurement is 17 feet. |
Ships within 48 hours · Estimated delivery Jul 27 - Aug 1
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