Volume Damper Low-Leak OBD 3000-0BDLL-44X40 Smoke-Fire Damper Flush core and frame provides

Flush core and frame provides smooth surface

T-Bar Modular Core Diffuser with Round Collar 18-20

blade to blade neoprene seals

For ceiling or sidewall applications

Standard Features * Extruded

Volume Damper Low-Leak OBD 3000-0BDLL-44X40 Smoke-Fire Damper Flush core and frame providesh3. 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.