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SD52 - Transition Box Spiral Pipe Grille (Single Deflection)
425 Series Submittal
Uniform 360 degree discharge pattern
Options (must specify when ordering)
2550 Series Submittal
Parallel Blade Volume Damper 3000P-30X18 Specialty Products 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
