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080") Aluminum Construction 1/8" GA (
listed Fire-Resistance Diffuser * TVB - Thermal Vapor Blanket * Square Collar
Adjustable aluminum airfoil blades oriented for 1 or 2 way airflow pattern
7/8” Wide x 7/8” High square holes
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
Volume Damper Low-Leak OBD 3000-0BDLL-46X18 Smoke-Fire Damper 080") Aluminum Construction 1/8" GAh3. 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.
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