Volume Damper Low-Leak OBD 3000-0BDLL-66X22 Step Down Ceiling Diffuser Narrow ceiling grid dimples for

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

Standard Features * Field installable butterfly damper * Available in sizes 6

904 - Double Deflection Adjustable Aluminum Blade Grille For a 14" x 12" Duct Opening (front blades parallel to shortest dimension)

One piece steel frame

Standard Features * Extruded aluminum construction * 45 fixed blades parallel to longest dimension * Margin edges are 7/8" projection for baseboard installation * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Soft White Options * 1100FF - flush frame * Fractional and odd dimension sizes * Standard Color

Volume Damper Low-Leak OBD 3000-0BDLL-66X22 Step Down Ceiling Diffuser Narrow ceiling grid dimples forh3. 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.