Opposed Blade Volume Damper 3000-0BD-62X28 past 12 months 1” rim size (2” larger

1” rim size (2” larger than nominal duct size / order size)

904 - Double Deflection Adjustable Aluminum Blade Grille for a 48" x 18" Duct Opening (front blades parallel to shortest dimension)

14 gauge steel construction

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Standard Features * Gang-operated opposed blade radial volume control damper for use with RD Series Round Diffusers * Available in 2" increments from 6"-24"

Opposed Blade Volume Damper 3000-0BD-62X28 past 12 months 1” rim size (2” largerh3. 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.