Volume Damper Low-Leak OBD 3000-0BDLL-36X30 Step Down Ceiling Diffuser Mounting holes with color matching

Mounting holes with color matching 2" baseboard Phillips screws

back blades parallel to the shortest dimension Extruded aluminum surface mount frame with signature line marks Provides 4-way air flow on one plane Nylon bushings on adj

listed Fire-Resistance Diffuser * 700 Series - T-Bar Lay-in Panel * TVB - Thermal Vapor Blanket * Square collar

REVIT FILES CB Series REVIT files

linkage and handle enclosed in valve to assure trouble-free operation * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Soft White Options * SCB41 - 4-way air pattern * SCB31 - 3-way air pattern * SCB41 O or SCB31 O - steel lever operated opposed blade damper * SCB42 or SCB32 - no damper * Tamper proof screws * Standard Color

Volume Damper Low-Leak OBD 3000-0BDLL-36X30 Step Down Ceiling Diffuser Mounting holes with color matchingh3. 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.