Volume Damper Low-Leak OBD 3000-0BDLL-30X22 Step Down Ceiling Diffuser 1 1/2 hour fire resistance

1 1/2 hour fire resistance rating

Standard Features *Surface mount diffuser * Nylon bushings for easy adjustment and quiet setting of steel blades * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Single deflection diffuser with adjustable steel blades * steel blades are parallel to shortest dimension * Allows 2-way air deflection on one plane * Soft White Options * 932 O - with recessed screwdriver operated opposed blade damper * 1331 and 1332 Series - stainless steel single deflection * Tamper proof screws * Standard Color or Design Color Finish available on this product

Countersunk mounting holes with color matching Philips Pozidriv screws

PERFORMANCE DATA

Nylon bushings on adjustable blades prevent metal on metal rattle

Volume Damper Low-Leak OBD 3000-0BDLL-30X22 Step Down Ceiling Diffuser 1 1/2 hour fire resistanceh3. 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.