Installing Nailer Tubes around optional window frame
The front face of the window frames must be framed out to be flush with the flat surfaces of the hat channel. This will be
accomplished by framing the window with 1 1/2” square nailer tubes. The horizontal nailer tubes for the top and bottom of
the window frame are 40” long with 3 mounting holes. The vertical nailer tubes for the sides of the frame are 60” long with
3 mounting holes. Vertical nailer tubes must be cut to required rough opening size.
Install the bottom tube first flush with the top of the bottom window frame tube and centered on the frame. Install the verti-
cal nailer tubes flush with the insides of the window frame and the top tube cantered and flush with the bottom of the top
window frame tube. See illustration. Use #13 x 2” pan head, self-drilling, square drive screws to fasten the nailer tubes to
the window frame.
TOP NAILER TUBE
1 1/2” SQ X 40” LONG
BOTTOM NAILER TUBE
1 1/2” SQ X 42” LONG
TOP WINDOW
FRAME TUBE
VERTICAL (SIDE) NAILER TUBE
1 1/2” SQ X 60” LONG OR CUT
TO WINDOW ROUGH OPENING
HEIGHT
SIDE WINDOW
FRAME TUBE
#13 X 2” PAN HEAD,
SELF-DRILLING SCREW
BOTTOM WINDOW
FRAME TUBE
42”
60” OR
ROUGH
OPENING
ANGLE BRACKET
HORIZONTAL
FRAME TUBE
2 x 3 x 45 3/4”
Or 57 3/4”
VERTICAL FRAME
TUBE 2 X 3 X 60” OR
CUT TO WINDOW
ROUGH OPENING
HEIGHT
HORIZONTAL
FRAME TUBE
OPTIONAL WINDOW FRAME
If you are installing an optional window frame,
Measure your window to determine the rough
opening that you will need. Cut the vertical
window frame tubes to the height of the rough
opening. Mount the lower horizontal window
frame tube to the side posts as shown at right
with angle brackets. The tube should be level.
Pre-mount angle brackets to the vertical frame
tubes. Center and properly space them on the
bottom tube to give you the correct rough opening
width. Fasten them in place. Now, install the top
horizontal frame tube with angle brackets. Square
and plumb the vertical tubes and attach them to
the top frame tube.
The window kit includes:
(2) horizontal frame tubes 2” x 3” x 45 3/4” for 4’
OC frames or 2” x 3” x 57 3/4” for 5’ OC
frames, and 2” x3” x 69 3/4” on 6’ OC frames.
(2) vertical frame tubes 2” x 3” x 60” that can be
cut to rough opening height
(2) horizontal nailer tubes 1 1/2” square x 42”
long with 3 holes
(2) vertical nailer tubes 1 1/2” square x 60” long
with 3 holes
(12) #13 x 2” pan head, self-drilling screws
(8) angle brackets with screws
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