Volume Damper Low-Leak OBD 3000-0BDLL-62X20 Smoke-Fire Damper NGD - Narrow ceiling grid

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

Standard Features * 1" rim size (2" larger than nominal duct size) * 14 gauge steel * 1305: 1/2" lattice opening

Designed for large volume air delivery

Standard Features * Steel construction * Generous free area for quiet operation * Lever operated single-blade damper * Removable face and damper * Tension wings to stabilize damper * Available in 15"

Volume Damper Low-Leak OBD 3000-0BDLL-62X20 Smoke-Fire Damper NGD - Narrow ceiling gridh3. 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.