FRAMING
13
3.4 Wall Enclosure Rough Opening
WARNING: Provide adequate clearances around air openings
into the combustion chamber. Provide adequate clearance in
front of the fireplace for barrier removal, component access,
gas line installation, service access, etc.
• Framing dimensions should allow for wall covering thickness
and fireplace facing materials. If using a hearth, adjust the
rough opening size as necessary to maintain minimum
clearance requirements.
• If masonry is to be used (optional), prepare the necessary
foundation for the masonry load. When masonry construction
is to be used, a lintel must be used over the top of the
appliance to support the additional weight.
Figure 3.3, Finished Opening Dimensions
42”
(1067mm)
36¼”
(920 mm)
157⁄8”
(403mm)*
SINGLE VERTICAL HEADER
BOARD IS REQUIRED TO
MAINTAIN CLEARANCES TO
COMBUSTIBLES
½
” (13mm) TYPICAL
FINISH MATERIAL
*INCLUDES ½” (13mm) TYPICAL FINISH
MATERIAL WITH FLUSH MOUNT
