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* 2550 - Round Spring actuated (6) damper for vertical or horizontal mount
Free area equals more than 75% of nominal size
Options * Sleeve variations * Fractional and odd sizes available h3
Adjustable steel curved blades
Backdraft Vertical Mount 3550-26X16 Accessories * 2550 - Round Springh3. 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
US$ 112.46
US$ 123.99
US$ 16.99
