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Installation (continued)
3
Drawing a reference square
□
Draw a reference square 25-3/8 in. x 25-3/8 in. on the roof
using the hole drilled in step 2 as the center.
25-3/8 in.
25-3/8 in.
4
Drawing a circle
□
Within the square, draw a 17 in. diameter circle (1) and
remove shingles, nails, and felt from the circle.
1
5
Cutting the roof
□
Draw a 14-1/2 in. diameter circle (2) inside the 17 in.
circle (1). Ensure that the hole drilled in step 2 is at the
center of this circle.
□
Cut through the decking using the 14-1/2 in. circle as the
cut line.
1
2
6
Positioning the flange
□
Slide the fan’s flange up under the shingles. You may need
to remove some roofing nails.
□
Position the fan on the reference square drawing in step 3
to align the exhaust opening.
Summary of Contents for 1005443146
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