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RD Series Submittal
1/2" spacing dual angular louvers for strength and maximum free area
SUBMITTALS 845 Series Submittal
Hinged perforated face with screwdriver access to release
Designed for large volume air delivery
Backdraft Vertical Mount 3550-24X32 T-Bar RD Series Submittalh3. Standard Features * 3550 Vertical mount * 3560 Horizontal mount air up * 3570 Horizontal mount air down * 3580 Round sizes available 5" to 24" * All non motorized backdraft dampers * Dampers are opened by air pressure differential and closed by gravity * 16 gauge channel frame with 26 gauge galvanized blades * Out of airstream linkage * Blades are vee stiffened 26 gauge for strength and stability * Square steel pivot pins * Nylon bushings * Single
