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10 Heatilator • Novus BV-Mesh • 4031-553 Rev F • 11/07
C. Clearances
Per
Manufacturer’s
Specifications
C
B
A
32-1/2 in.
(826 mm)
to ceiling
0 in.
0 in. TO LEVEL
OF STANDOFFS
1/2 in.
(13 mm)
Drywall
0 in.
1/2 in.
(13 mm)
Combustible Object
36 in.
(914 mm)
Combustible flooring may be installed
next to the front of the appliance.
Figure 3.2 Clearances to Combustibles
Model
A
Rough Opening
(Width)
B
Rough Opening
(Height)
C
Rough Opening
(Depth)
NB3630M/MI in. 36 34-7/8 19-5/8
mm 914 886 498
NB3933M/MI in. 39 34-7/8 19-5/8
mm 991 886 498
NB4236M/MI in. 42 34-7/8 19-5/8
mm 1067 886 498
NB4842M/MI in. 48 34-7/8 19-5/8
mm 1219 886 498
Fire Risk
Odor Risk
• Install appliance on hard metal or wood
surfaces extending full width and depth
of appliance.
• Do NOT install appliance directly on
carpeting, vinyl, tile or any combustible
material other than wood.
• Do NOT place furniture or any other
combustible household objects within
36 in. of the appliance front.
WARNING
Note: If the inside of the framed cavity is to be
fi nished, the framing dimensions must include the
fi nished surface. If drywall is to be attached to the
rear wall, the depth must be measured from the
drywall surface.