Roof Curb, For Fan Base Size 25 in to 30 1/2 in, Curb Height 12 in, Curb Inside Width 19 1/2 in to 28 in, Curb Outside Width 23 1/2 in to 32 in, Material Steel, Standards UL 705, For Use With 25 in to 30 1/2 in Square Base, Adjustability Adjustable, Ventilation Type Nonventilated, Application General Exhaust, Curb Shape Square, Damper Tray Size 19 in to 27 in, Features Flashing Flange, Finish Galvanized, Flashing Flange Width 4 in, For Fan Type Downblast Fans, Filtered Supply Fans, Upblast Fans.
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