Opposed Blade Volume Damper 3000-0BD-62X34 Step Down Ceiling Diffuser available 4" through 40" round

available 4" through 40" round (2549)

Heavy gauge steel construction

375 Series Engineering/Performance Data

904 - Double Deflection Adjustable Aluminum Blade Grille For a 48" x 30" Duct Opening (front blades parallel to shortest dimension)

Opposed Blade Volume Damper 3000-0BD-62X34 Step Down Ceiling Diffuser available 4" through 40" roundh3. 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.