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1/2" spacing dual angular louvers for strength and maximum free area
120x120 multiple
Rust resistant pre-coat with durable powder finish
Allows for 2-way airflow adjustment
Adjustable single deflection grille
Opposed Blade Volume Damper 3000-0BD-70X38 Smoke-Fire Damper 1/2" spacing dual angular louversh3. 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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