Best Seller | DAYTON 2RB76 Roof Curb,Fixed,12 In H,20 1/2 In OD Roof Curb, For Fan Base Size 22 in, Curb Height 12 in, Curb Inside Width 17 1/2 in, Curb Outside Width 20 1/2 in, Material Steel, Standards UL 705, For Use With 22 in Square Base, Adjustability Fixed, Ventilation Type Nonventilated, Application General... ... more DAYTON 2RB76 Roof Curb,Fixed,12 In H,20 1/2 In OD Roof Curb, For Fan Base Size 22 in, Curb Height 12 in, Curb Inside Width 17 1/2 in, Curb Outside Width 20 1/2 in, Material Steel, Standards UL 705, For Use With 22 in Square Base, Adjustability Fixed, Ventilation Type Nonventilated, Application General... | | $164.99 go to store |