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3
Step 2
Install the plenum (cont.)
3. Attach the sides of the plenum to the wall studs
using 6 screws. Use 3 screws on each side.
Do not use screws in the plenum top or bottom.
NOTE: Pilot holes may need to be drilled through the
plenum and into the frame.
(continued on next page)
Step 3
Install the insulating foam strips
1. Measure and cut the shorter (top and bottom)
foam strips to match the depth of the plenum
that is exposed in the interior wall.
2. Peel off the backing and apply the foam strips to
the top and bottom of the plenum along the front
edges and against the interior walls.
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