Backdraft Damper Horizontal Down 3570-20X30

Backdraft Damper Horizontal Down 3570-20X30h3. 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

Standard Features * Radius flush style spiral mount diffuser * Single piece formed frame * Curved frame fits flush to spiral pipe * Single deflection * Nylon bushings for easy adjustment * Adjustable blades are parallel to shortest dimension * Available in 8" thru 36" spiral diameters (Note: spiral diameter must be 4" larger than register width) * Soft White Options * RS52-GALV - Single piece galvanized steel with formed frame * RS52-SC - Screwdriver operated air scoop * RS52 O - with recessed screwdriver operated opposed blade damper * Standard Color or Designer Color Finish available on this product

Maximum dimension 60x60 single

Lever operated steel multi-shutter damper

Maximum size 60"x48"

904 - Double Deflection Adjustable Aluminum Blade Grille For a 48" x 24" Duct Opening (front blades parallel to shortest dimension)

Mounting Holes - Designed for ceiling or sidewall application

CB Series 6X6 REVIT Files

Satin polished finish

Blades are parallel to the shortest dimension

floors and partitions with fire resistance ratings of 2 hours or less (for ceiling application

Adjustable steel curved blades

Square or rectangular ceiling radiation butterfly damper