Opposed Blade Volume Damper 3000-0BD-46X18 past 12 months SD34 - Transition Box Spiral

SD34 - Transition Box Spiral Pipe Grille (DOUBle Deflection)

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

PERFORMANCE DATA CB-T Series Engineering/Performance Data

904 - Double Deflection Adjustable Aluminum Blade Grille For a 38" x 18" Duct Opening (front blades parallel to shortest dimension)

Opposed Blade Volume Damper 3000-0BD-46X18 past 12 months SD34 - Transition Box Spiralh3. 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.