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When finishing a custom cabinet, mantel, or other built-in enclosure,
the opening size to accommodate the fireplace with trim installed
is as follows:
GCUF32 with trim
7
K
37
/
"
8
J
7
35
/
"
8
1. Bend out the nailing flanges located on each side of the firebox.
2. Slide the firebox into prepared framing or position firebox in its final position and frame later.
3. Level the firebox by checking the top edge of the firebox. Shim if necessary.
4. Anchor firebox to the side framing members using 8d nails or other suitable fasteners. See Figure 14.
5. The canopy must be installed for safe operation of the heater. See page 13 for canopy installation details.
Nail Sides
Through Nailing
Flanges
26D3312
GCUF36 with trim
7
41
/
"
8
7
35
/
"
8
The fireplace must be installed giving
full consideration to the clearance
and height requirements identified in
this manual.
Figure 14 - Location of Nailing Flanges
GCUF42 with trim
7
47
/
"
8
7
35
/
"
8
FIREPLACE FRAMING
�
Figure 13 - Custom Cabinet
�
11
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