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Monessen - Exacta BUF 42 - Vent free circulating firebox with radiant face, 42" opening - BUF42



Monessen Exacta 42" Vent Free Circulating Firebox with Smooth Radiant Face

Shown with vent free gas logs (not included).  Click on the accessories tab to view optional accessories for this model.  This model is compatible with any 30" Vent Free Gas Log Set.


Monessen offers one of the most diverse lineups of vent free gas fireboxes available, making it easy to find the right look for your home. With the addition of a Monessen vent free log set, you can enjoy beautiful flames, excellent, cost-efficient heating and a customized look, all without the hassle of extensive renovations or costly remodels.


A Monessen vent free firebox is the perfect way to display and operate your Monessen vent free log set. While our log sets can be utilized in an existing approved wood burning fireplaces (converted with a gas line), if your home does not already have an existing fireplace, a vent free firebox is an economical way to add a fireplace to your home. Installed in either your wall or a free-standing cabinet, a vent free firebox is simply the metal combustion chamber of a traditional fireplace system, without the log set and engine. You then add the vent free log set (with engine) of your choice to complete it.

By contrast, a vent free fireplace system includes the firebox, log set and engine as a package. It too can be installed either in a wall or a free-standing cabinet.

In either situation, since no venting is required, installation is faster and easier than with a traditional vented system.


Our extensive and versatile line of vent free fireboxes offer a zero clearance design which means installation is faster, easier and more affordable than other vent free fireboxes. They may be installed flush against any combustible surface such as drywall or wood, inside a cabinet, or installed in the wall like a traditional fireplace, and can be placed in locations where it would be costly or even impossible to install a vented product. This gives you added flexibility and helps save installation dollars when deciding where to locate your new firebox, whether on an interior or exterior wall. With a variety of sizes, styles and price points from which to choose, there is a Monessen vent free firebox to fit just about any space, style and budget. (Remember to always follow manufacturer’s installation instructions when considering the location and surroundings for your new fireplace.)


With the addition of a Monessen vent free gas log set, Monessen vent free fireboxes are a safe and energy efficient way to add heat to your home — in fact, they’re 99.9% energy efficient. Because they are vent free, none of the heat gets lost up a vent, flue or chimney. Instead, fuel dollars get transformed into heat-warming energy. Plus, you can always be assured of a heat source, even in the event of a power outage.


Monessen offers a wide selection of vent free log sets (sold separately) that are a perfect complement to your new firebox. Ask your dealer for more information on choosing the right size and style for your space.

  • No chimney or venting required makes installation fast, easy, and affordable
  • Clean, louver-less design
  • Tuck the screen into hideaway pockets to reveal expansive views
  • Black interior provides elegant background for vent free log set
  • Brick interior available for a traditional look
  • Large hearth area allows for a variety of log sets
  • Angled firebox and uniquely engineered air channels move more heat into the room, maximizing efficiency


Exacta BUF 42

Size: 42
Appliance Width: 48″
Appliance Height: 37-1/4″
Appliance Depth1: 23″
Hearth Front Width: 41-1/4″
Hearth Front Height: 21-3/4″
Hearth Depth: 18-5/8″
Hearth Rear Width: 30-1/4″
Hearth Rear Height: 20-3/8″
Viewing Area: 42 x 24″



  • Circulating firebox with radiant clean face
  • Junction box
  • Mesh curtain screens
  • CSA design certified to ANSI Z221.91.A2002
  • NOTE: Log sets are not included and must be ordered separately. See gas logs section for 24" and 32" compatible vent-free logs


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