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Ships within 48 hours · Estimated delivery Aug 13 - Aug 18
Options Recessed screwdriver operated Opposed Blade Damper
Steel construction
Accessory to the 90 Series
w/ Lever Operated Opposed Blade Damper
Blades spaced at 2/3"
Backdraft Vertical Mount 3550-12X36 Commercial Options Recessed screwdriver operated Opposedh3. 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
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