Montigo R320 - Manual (Page 12)

Figure 5. Completed back frame Fireplace installation
Back framing the Fireplace
NOTE: Maintain a 1" clearance around the throat (projection at the front of the fireplace that holds the glass door) when installing 2x4s
for back framing.
Step 1). Cut and install one 2x4 to fit horizontally under the fireplace throat.
Step 2). Cut and install required quantity of short filler 2x4's to fit vertically under the horizontal piece.
Step 3). Cut and install four vertical 2x4's. Place 2 on each side of the fireplace throat.
Step 4). Install supplied steel header 1" above the throat. Attach steel header to vertical 2x4's as shown in figure 5.
Step 5). Cut and install one horizontal 2x4 below the top frame.
1” clearance
1” clearance
Model
Supplied Steel
Header
Measurements
R320* 46 1/2" x 3"
R420* 58 1/2" x 3"
Steel header
(supplied by Montigo)
2-pcs 2 x 4 (vertical)
Both Sides Typ.
1” clearance 1” clearance
2 x 4
(horizontal)
2 x 4
(horizontal)
2 x 4
(Vertical)
Note: Images are shown without screens for clarity purposes.
However, your fireplace should not be operated without proper
installation of screens.
R320 & R420 Power Vent Indoor Gas Fireplace
Page 12
XG0770 - 150105.1
Installation