Opposed Blade Volume Damper 3000-0BD-38X18 Residential Registers & Grilles 104 - four way *

104 - four way * 2x2 galvaneal steel panel with seismic support holes * Square to round No Labor Collar * Soft White Options * 104 D - steel multi-shutter damper * 104 O - steel opposed blade damper * 104 FR

945 Series Engineering/Performance Data

linkage and handle enclosed in valve to assure trouble-free operation * Soft White Options * 955 O - steel opposed blade damper * Tamper proof screws * Standard Color or Designer Color Finish available on this product

Standard Features *Surface mount return air grille * 0 fixed blades parallel to longest dimension * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Soft White Options * 937 O - recessed screwdriver operated opposed blade damper * No Labor Collar (square sizes only) * 900 T - T-Bar mount * 905 HD - reinforced construction * 905 IS - insect screen * 1335-1338 Series - stainless steel version * Tamper proof screws

RD Series Engineering/Performance Data

Opposed Blade Volume Damper 3000-0BD-38X18 Residential Registers & Grilles 104 - four way *h3. 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.