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Ships within 48 hours · Estimated delivery Oct 6 - Oct 11
Hinged removable extruded aluminum face frame with signature line marks
Available in 6”–12” collar sizes
Heavy Duty Construction (1 1/2" frame depth utilized)
080") Aluminum Construction 1/8" GA (
700 CB20 - two way
Opposed Blade Volume Damper 3000-0BD-70X70 Commercial Hinged removable extruded aluminum faceh3. 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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