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Flange under
shingles
Sealant
Sealant
Roof
10” Round
duct
adjustable
elbow
Blo
wer
Air
exhaust
NOTE:
Connect the blower to the exhaust system with a 10” diameter metal duct only. Use a 10”
adjustable elbow to adjust to the roof angle. IMPORTANT: You must run 10”
RIGID
round
duct work from the external blower to the ceiling. Reducing to smaller ducting will greatly
reduce performance and possibly reduce the life span of the blower.
Tape and screw all joints to prevent air leaks.
FIGURE 4
Flange over
shingles
electrical
wires
Roof installations (Connecting Ductwork)
