Opposed Blade Volume Damper 3000-0BD-44X18 Smoke-Fire Damper inner dimension and outside dimension

inner dimension and outside dimension available * Available in continuous lengths with butt joints * Tamper proof screws * Standard Color

1600 Series Submittal

Standard Features * Heavy duty honeycomb construction * Blades run parallel to longest dimension given * Gym Grade - includes welded core and extra supports for heavy duty application * Mounting holes for sidewall and ceiling application * Recessed screwdriver operated opposed blade damper to control air volume for positive balance of system * Soft White Options * No mounting holes * Tamper Proof Screws * Standard Color

Concealed mounting holes with mounting screws

Opposed Blade Volume Damper 3000-0BD-44X18 Smoke-Fire Damper inner dimension and outside dimensionh3. 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.