3
4
8
a
a. Using template, mark 4 holes on duct.
b
b. Draw a line between each corner mark.
c
c. Cut between holes using a utility knife.
Continue with #4 (above)
ALTERNATIVE CUTTING METHOD
FIBERGLASS DUCTWORK INSTALLATION
1 2
2. Mark location for 3.5” opening using either
the mounting plate or included template. Also
mark the locations of 4 screw holes in corners
(see template).
3.
Cut hole in duct using 3.5” hole saw.
4.
Drill 4 holes (at corner screw locations)
using a 3/8” drill bit.
1. Locate suitable area
of duct for installation.
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