Opposed Blade Volume Damper 3000-0BD-70X56 Accessories Hinged removable extruded aluminum face

Hinged removable extruded aluminum face frame with signature line marks

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

Zinc plated steel closure spring

Damper manufactured from corrosion tested galvanized mild steel (G-90)

Note: Sizes are Listed Nominal Duct Opening

Opposed Blade Volume Damper 3000-0BD-70X56 Accessories Hinged removable extruded aluminum faceh3. Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non metallic celcon bushings * 1 2" square zinc plated steel pivot pins * 1 2" square zinc plated steel adjustable operating shaft extending up to 4" beyond the air control frame * Single blades on dampers with a height of 12" or less * Mill finish h3.