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Ships within 48 hours · Estimated delivery Aug 29 - Sep 3
Building materials rated 2 hours or less
CB30 - three way
Product sizes available to fit spiral pipe diameter 8” – 48
Extruded aluminum frame with steel roll formed blades and steel multi-shutter damper
Lever operated Opposed Blade Damper
Volume Damper Low-Leak OBD 3000-0BDLL-72X62 Accessories Building materials rated 2 hoursh3. 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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