Opposed Blade Volume Damper 3000-0BD-56X12 Smoke-Fire Damper SD52 - Transition Box Spiral

SD52 - Transition Box Spiral Pipe Grille (Single Deflection)

RD Series Submittal

Recessed screwdriver operated opposed blade damper to control air volume for positive balance of system

Standard Features * 2533 - Square or rectangular for vertical mount only

Opposed Blade Volume Damper 3000-0BD-56X12 Smoke-Fire Damper SD52 - Transition Box Spiralh3. 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.