Opposed Blade Volume Damper 3000-0BD-42X10 Smoke-Fire Damper Standard Features Double deflection surface

Standard Features Double deflection surface mount grille with adjustable airfoil blades Front blades parallel to longest dimension

60% free area * Soft White Options * Countersunk screwholes with matching Phillips #8 x 1-1/2" oval Screws * 10 or 12 gauge steel * Tamper proof screws

Available in even sizes 6" to 20" and 24"

Minimum size is 4"x4"

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

Opposed Blade Volume Damper 3000-0BD-42X10 Smoke-Fire Damper Standard Features Double deflection surfaceh3. 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.