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Negator stainless steel closure springs mounted on spring pin brackets
425 Series Submittal
Available 4" thru 28" round
Standard Features * 2649 - Round damper for vertical mount only
14" and 16" * Soft White Options * Field installable Bowtie Damper (BD) (sizes 6-14"
Backdraft Vertical Mount 3550-12X12 Accessories Negator stainless steel closure springsh3. 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$ 50.00
US$ 71.99
US$ 36.96
US$ 50.00
