Opposed Blade Volume Damper 3000-0BD-60X44 past 12 months Countersunk mounting holes for flush

Countersunk mounting holes for flush appearance with color matching Phillips Pozidriv screws

Standard Features * 2661 - Square or rectangular fire door for vertical mount only

Double deflection radius mount spiral pipe grille with adjustable blades

Narrow ceiling grid dimples for 9/16" T-Rails

Maximum single section size 24"x24"

Opposed Blade Volume Damper 3000-0BD-60X44 past 12 months Countersunk mounting holes for flushh3. 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.