An exhaust fan mounts to a sloped factory curb installed over a concrete roof deck with rigid insulation, cant strip, and roofing applied by the general contractor. The factory curb matches the roof slope to provide a level mounting surface for the fan, fastened directly to the roof by the general contractor. A motorized damper installs within the duct opening below the curb, paired with ten feet of duct lining.
PROVIDE 10 FEET OF DUCT LINING CONCRETE ROOF DECK RIGID INSULATION, CANT STRIP & ROOFING BY GC ATTACH FAN TO CURB PER MANUFACTURERS INSTRUCTIONS EXHAUST FAN PROVIDE FACTORY CURB THAT MATCHES ROOF SLOPE FOR LEVEL FAN MOUNTING FASTEN FACTORY CURB TO ROOF BY GC MOTORIZED DAMPER ROOF M
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