27
Non-combustible material
44-1/2” (1
130 mm)
45°
45°
Min. 9” (229 mm);
beyond, can be combustible
10” (254 mm) min.
sidewall clearance
4”
(102 mm)
Combustible projections allowed in this area provided area is separated
from the main cavity by non-combustible wall finish. Otherwise everything
below stand-off height and within cavity must be non-combustible.
Framing/Finishing of projections/
Extensions around fireplace opening
must be non-combustible material
Wood framing with 1/2” (13 mm) clearance allowed at
corners only. Otherwise use steel framing if against appliance.
Non-combustible wall finish
here separating cavity from
combustible projections
Fireplace opening
1/2” (13 mm) clearance to appliance
Wood stud allowed
at corners only
Combustible wall finish
allowed if framing
out to flanged opening
Combustible finishing materials
up to
1-1/4” (32 mm)
thickness allowed below opening height.
Combustible projections
greater than
1-1/4” (32 mm)
must otherwise be kept min. 4” (102 mm) below opening.
2” (51 mm) clearance to combustible
2” (51 mm)
clearance to
combustible
2” (51 mm)
clearance to
combustible
2” (51 mm)
clearance to
combustible
Non-combustible
material only
against appliance
Non-combustible
material only
against appliance
Non-combustible wall finish
here separating cavity from
combustible projections
Projecting surfaces
within 4” (102 mm)
of opening must be
non-combustible
WARNING
Ensure weight of wall above is
NOT carried by the appliance.
!
CLEARANCES TO COMBUSTIBLE
PROJECTIONS
QUALIFIED
INSTALLER