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SD52 - Transition Box Spiral Pipe Grille (Single Deflection)
Holds up to a 2” filter (not included)
Type 316 stainless steel
Available 4" thru 40" round
Face set in an outer T-Bar filter grille frame
Parallel Volume Damper Low Leak 3000PLL-66X56 past 12 months SD52 - Transition Box Spiralh3. Standard Features * 16 gauge galvanized channel frame * Parallel blades are cee 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. Options * 3000 PLL Low Leak Air Control
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