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 ireplace 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
SINGLE VERTICAL HEADER
BOARD IS REQUIRED TO
MAINTAIN CLEARANCES TO
COMBUSTIBLES
44½”
(1130mm)
41
3⁄8”
(1051mm)
17½”
(445mm)
