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425 Series Engineering/Performance Data
1x1 T-Bar (10" x 10" duct)
listed Fire-Resistance Diffuser * TVB - Thermal Vapor Blanket * Square collar Additional Drawings * 825 MA
Standard Features * Extruded aluminum construction with steel multi-shutter damper * Margin edges are 7/8" projection for baseboard installation * Nylon bushings for easy adjustment and quiet setting of airfoil blades running parallel to shortest dimension * Countersunk mounting holes for flush appearance
Minimum size 4"x4"
Opposed Blade Volume Damper 3000-0BD-72X72 past 12 months 425 Series Engineering/Performance Datah3. 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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