Opposed Blade Volume Damper 3000-0BD-30X22 Smoke-Fire Damper see 2700 series)

see 2700 series)

Designed for return applications and as a vented access door to equipment

904 Series Performance Data

PERFORMANCE DATA CB-T Series Engineering/Performance Data

Standard Features * 4000 - door core grille with single frame * 4100 - door core grille with additional loose frame *

Opposed Blade Volume Damper 3000-0BD-30X22 Smoke-Fire Damper see 2700 series)h3. 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.