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Ships within 48 hours · Estimated delivery Aug 14 - Aug 19
1” rim size (2” larger than nominal duct size / order size)
Square collar designed for 20” × 20” duct
Building materials rated 3 hours or less
Tool Operated Opposed Blade Damper
Blades are parallel to the shortest dimension
Parallel Volume Damper Low Leak 3000PLL-48X24 Specialty Products 1” rim size (2” largerh3. 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
