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14 GA 304 SS Construction
CSFM California State Fire Marshal listed
Square to round 2" collar with roll formed retention bead - available in square sizes only
SD52 - Transition Box Spiral Pipe Grille (Single Deflection)
904 - Double Deflection Adjustable Aluminum Blade Grille For a 30" x 10" Duct Opening (front blades parallel to shortest dimension)
Opposed Blade Volume Damper 3000-0BD-48X18 past 12 months 14 GA 304 SS Constructionh3. 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.
