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Extruded aluminum frame with steel roll formed blades and steel multi-shutter damper
w/ Screwdriver Operated Opposed Blade Damper
Standard Features * Gang-operated opposed blade radial volume control damper for use with RD Series Round Diffusers * Available in 2" increments from 6"-24"
Submittals and Performance Data
Eighteen air patterns
Volume Damper Low-Leak OBD 3000-0BDLL-58X40 T-Bar Extruded aluminum frame with steelh3. 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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