Steel 40 W 12 H Fixed Roof Curb

Roof Curb For Fan Base Size 40 in Curb Height 12 in Curb Inside Width 35 1/2 in Curb Outside Width 38 1/2 in Material Steel Standards UL 705 For Use With 40 in Square Base Adjustability Fixed Ventilation Type Nonventilated Application General Exhaust Curb Inside Length 35.5 Curb Outside Length 38 1/2 in Curb Shape Square Damper Tray Size 27 in x 27 in Features Flashing Flange One Welded Corner Finish Galvanized Flashing Flange Width 2 in