The BUF36 firebox can accept 18" and 24" vent free burners and log sets (sold separately). Confirm firebox dimensions with burner requirements before purchasing. Below are the Monessen Log Set options available for this firebox. With zero clearance, the firebox can be installed flush against any surface like drywall or wood. Vent Free Natural Blaze Burners are available for use with each of these log sets:

Additionally, Monessen offer Natural Blaze burners with Natural Blaze Technology. This technology helps provide taller, more lively flames for a truly realistic fire in your vent-free firebox. Beautiful yellow flames are instantly achieved every time your burner is switched on. - Millivolt Valve (NB18PV, NB18NV, NB24PV, NB24NV) - standing pilot with on/off switch and manual variable flame height control and remote ready (remote sold separately)
- Electronic Ignition with Intellifire Plus System (NB18PIF, NB18NIF, NB24PIF, NB24NIF) - intermittent pilot/electronic ignition, 3 step flame adjustment and Touch Screen Thermostat Remote included.
With a vent free firebox, fresh air is drawn in at the bottom of the firebox, and warmed air is expelled into the room from the top. The Exacta firebox features an angled top design to help direct the warm air out for maximum efficiency. A blower (GFK-160VF) can be added to help circulate the warm air.
An optional outside air kit is also available for vent free fireboxes. The AKD introduces fresh, outside air into the firebox. An outside air kit is recommended as an accessory when installing a vent free appliance into newer, more air tight construction for an adequate supply of fresh air. Some local building codes may require an outside air kit.
Vent-Free Products Cannot Be Shipped To The State Of California.