LoRider Designer Vent Free Firebox

The LoRider Designer vent free firebox is available as a see-through model, adding style and warmth to multiple rooms while maintaining a contemporary feel. The louverless design provides a clean exterior for an ultra sleek look.


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.

Accessories that fit your home and lifestyle

Blower Kit

Blower Kit

Power up your heat output with a variable thermostatic forced air blower.

Outside Combustion Air Kit

Outside Combustion Air Kit

Draws in outside combustion air for your firebox rather than pulling it from the room. 

Model Specifications

LoRider Designer 36

Appliance Width:42-3/16"
Appliance Height:34-1/2"
Appliance Depth:23-3/4"
Hearth Front Width:33-3/16"
Hearth Front Height:27-3/4"
Hearth Depth:21-15/16"
Hearth Rear Width:33-3/16"
Hearth Rear Height:27-3/4"
Viewing Area:36 x 27-3/4"

Appliance Depth includes entire unit including depth of firebox and extension onto hearth.

Framing depth will vary if you are installing the lower profile power vent (PVLP-SLP) with a minimum vent configuration. 12-1/2” is needed from the back of the appliance to the outside of the exterior wall. Refer to manual for details.

BTU: 1st hour output uses high burn efficiency number. BTU will vary depending on the type of fuel used and moisture content of the fuel.

BTU/hr Input based on maximum feed rate per hour multiplied by approximately 8600 BTU, which is average BTU from a pound of pellets.

This is a general guide, see your local dealer for help in determining the product that best suits your heating needs based on climate, home efficiency, location of the heater, and air movement in the room.

Actual burn times will vary based on how the appliance is operated, load size, moisture content and type of wood used.

Fuel density and pellet shape will affect hopper capacity.

Weighted Average LHV (Low Heating Value) efficiency.

Product Brochures

Owner's Manuals

Technical Specifications