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14" * Soft White Options * Field installable Bowtie Damper (BD) * TVB - Thermal Vapor Blanket * HVD - Hinge Down Face
Standard Features
Blade lock to secure blades once the product is activated
Standard Features * Individually adjustable steel curved blades * Lever operated steel multi-shutter damper * Pivoted steel blades for easy firm positioning * All component parts
Standard Features * Extruded aluminum (
Backdraft Vertical Mount 3550-14X14 Smoke-Fire Damper 14" * Soft White Optionsh3. 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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