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Framing Air Gaps
Your fireplace uses an air wash to maintain safe
temperatures inside the chase. These air gaps must be
created in framing and the minimum areas must be
adhered to.
The air gap needed for the air inlet and outlet are
based on minimum open area requirements:
U50 Air Outlet (Minimum): 170 in2 (1097 cm2)
U70 Air Outlet (Minimum): 210 in2 (1355 cm2)
Gap Height Minimum: 2 in (51mm)
Ex. 1" x 170" is not permitted.
No intake air gap is required
WARNING
IT IS ESSENTIAL THAT THE CHASE IS VENTED IN A MANNER THAT RELIEVES THE ADDITIONAL HEAT ENTERING THE
CHASE. ENSURE ONE OF THE AVAILABLE FRAMING OPTIONS HAVE BEEN CONSTRUCTED IN ACCORDANCE WITH THIS
MANUAL. FAILURE TO DO SO CAN CREATE AN OVERHEATING SITUATION THAT COULD LEAD TO BUILDING FIRE.
Ensure your chase has been constructed in a manner that vents the chase into the same room. It is not permitted to
vent the chase into an adjoining room. The fireplace cooling system bleeds heat into the chase as opposed to climbing
up the front face. This dramatically lowers the front wall temperatures allowing the placement of delicate objects above
the fireplace. Review the following guidelines to ensure your install is in accordance with the framing specifications.
Chase Framing
Framing Options
All framing may be wood 2X4 construction or the like, no steel
stud or concrete board required.
The following diagrams are common ways to frame your fireplace.
Other forms can also be used as long as minimum clearances and
air gaps are maintained.
NOTES:
• Chase may be framed beyond minimum framing for taller
ceilings, overhangs etc.
• Chase cannot be open to joists or rafters above.
• The fireplace is not load bearing so the chase must be
constructed to fully support finishing materials.
Framing and Installation
There is no maximum air gap surface area.