B. Clearances
Warning! Risk of Fire! You must comply with all minimum air space clearances to combustibles as specified in Fig- ure 6.2. Do NOT pack required air spaces with insulation or other materials.Framing or finishing material used on the front of, or in front of, the appliance closer than the minimums listed.must be constucted entirely of
Storm Collar
Roof Flashing
2 in. min.
(51 mm)
(attic)
2 in. (51 mm) min. 
Ceiling Firestop
2 in. (51 mm) min.
Attic
Insulation
Shield
Ceiling Firestop
(ceiling)
2 in. (51 mm) min.
Offset/Return with 
hanger straps
(ceiling)
2 in. (51 mm) min.
0 in. to level 
of standoffs 
2 in. (51 mm) min.
Must have 2 in. (51 mm)
minimum clearance
to header
0in.
to floor
1 in. (25 mm) to back of appliance
1 in. (25mm) to side of appliance (except at nailing flanges where it is 1/2 in. [13 mm])
Figure 6.2 Clearances to Combustible Materials
NOTICE: Chimney air kit is not shown, but is required.
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