The rectangular ductwork rests on a three-sided tubular channel support system that maintains an eighteen-inch minimum clearance above the finished roof. The supports sit on injection-molded high-density high-impact polypropylene bases without requiring direct connection to the roof membrane. The insulated ductwork includes a weatherproof jacketing, and the top of the duct is sloped to prevent water ponding. Ductwork seismic bracing is attached to the support frame where required.
DUCT PROVIDED WITH INSULATION AND WEATHERPROOF JACKETING. REFER TO SPECIFICATION FOR DETAILS. STRAP DUCTWORK TO SUPPORTS TO PREVENT MOVEMENT. TOP OF DUCT TO BE SLOPED TO PREVENT WATER PONDING. INJECTION MOLDED HIGH DENSITY HIGH IMPACT POLYPROPYLENE BASENO CONNECTION TO ROOF REQUIRED. THREE-SIDED TUBULAR CHANNEL SUPPORT SYSTEM FINISHED ROOF 18"MIN DUCTWORK SEISMIC BRACING WHERE REQUIRED. SEE NOTE 3.
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