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SD52 - Transition Box Spiral Pipe Grille (Single Deflection)
Standard Features * Steel construction * Generous free area for quiet operation * Lever operated single-blade damper * Removable face and damper * Tension wings to stabilize damper * Available in 15"
Options * 3000 OBDLL - Low Leak Air Control Damper
stair risers
One piece curved frame with gasket fits flush to spiral pipe
Parallel Blade Volume Damper 3000P-72X32 Commercial 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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