Opposed Blade Volume Damper 3000-0BD-72X42 Step Down Ceiling Diffuser * 2550 - Round Spring

* 2550 - Round Spring actuated (6) damper for vertical or horizontal mount

Single deflection radius mount spiral pipe grille with adjustable blades

904 - Double Deflection Adjustable Aluminum Blade Grille For a 36" x 24" Duct Opening (front blades parallel to shortest dimension)

Round Bowtie Damper

Opposed Blade Volume Damper 3000-0BD-72X42 Step Down Ceiling Diffuser * 2550 - Round Springh3. 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.