Niagara Div 23 09 Guide Specification - Honeywell

Blade edge and tip seals shall be included for all dampers. Blades shall be 16-gauge minimum and 6 inches wide maximum and frame shall be of welded channel iron. Damper leakage shall not exceed 10 CFM per square foot, at 1.5-inches water gauge static pressure. Control damper actuators shall be furnished by the Control System Contractor. ................
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