Volume Damper Low-Leak OBD 3000-0BDLL-60X38 Step Down Ceiling Diffuser Countersunk mounting holes for flush

Countersunk mounting holes for flush appearance with stainless sheet metal screws

Standard Features * 3-way diffusion for draft-free heat or air conditioning * For ceiling or sidewall applications * All component parts

PERFORMANCE DATA CB-T Series Engineering/Performance Data

For evaporative coolers or central blower systems

Volume Damper Low-Leak OBD 3000-0BDLL-60X38 Step Down Ceiling Diffuser 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.