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2550 Series Submittal
Blades run parallel to longest dimension
All steel parts with galvanized finish or zinc coating
22 gauge butterfly style galvanized steel blades
Parallel Volume Damper Low Leak 3000PLL-50X30 Specialty Products 2550 Series Submittalh3. 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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