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For damper free area chart A click here * 2563 - Out-of-Airstream fire door
SD34 Submittal Drawing
055 T6 extruded aluminum surface mount supply diffuser * Four air patterns: CB10 - one way
contour molded fiberglass back with a foil barrier backing
1” rim size (2” larger than nominal duct size / order size)
Parallel Blade Volume Damper 3000P-44X40 past 12 months For damper free area charth3. 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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