An area supply fan connects via a flexible connection and backdraft damper to a rectangular duct transition. The assembly includes a duct smoke detector, an isolation damper, and a twenty-four by eighteen inch supply air duct supported by typical hanger details above a concrete deck at bottom of duct elevation fifty-four point eight two.
24"x18" SUPA 70-SF-525-01 FINE SCREEN AREA SUPPLY FAN NO. 1 ISOLATION DAMPER (BD-8) BACKDRAFT DAMPER (BDD-4) FLEX CONNECTION DUCT TRANSITION FROM FAN OUTLET TO 24"x18" DUCT 1 DUCT SMOKE DETECTOR SD BD TYP H144 (TYP) BOD EL 54.82
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