Opposed Blade Volume Damper 3000-0BD-40X36 T-Bar Standard Features * 1/2" x

Standard Features * 1/2" x 1/2" x 1/2" aluminum lattice face *

904 - Double Deflection Adjustable Aluminum Blade Grille for a 48" x 18" Duct Opening (front blades parallel to shortest dimension)

Standard Features * Cones are one-piece stamped construction providing a clean

see 1560 Series * Tamper proof screws * Standard Color

425 Series Engineering/Performance Data

Opposed Blade Volume Damper 3000-0BD-40X36 T-Bar Standard Features * 1/2" xh3. 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.