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Be careful to install the provided neoprene
gasket according to the following figure
prior to setting the unit on the curb.
Where the supply or warm air duct
passes through a combustible roof, a
clearance of 1 inch must be
maintained between the outside
edges of the duct and combustible
material in accordance with National
Fire Protection Association Standard
No. 90A. Provide flashings or
enclosure between structure and roof
and all joints
mastic roofing to ensure a watertight
seal.
All roofing work should be performed
by competent roofing contractors to
avoid any possible leakage.
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