983L-S&P in-line adapter. 8″ X 12″ duct intake (FF900/1500).

RD1-S&P UL rated, 4 hour ceiling radiation fire dampers. (FF100 thru FF300)982L-S&P in-line adapter. 4.5X18.5 duct intake (FF400/500).

983L-S&P in-line adapter. 8″ X 12″ duct intake (FF900/1500).

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S&P in-line adapter. 8″ X 12″ duct intake (FF900/1500).

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