Curb Cap For Fan Diameter 36 in For Fan Type Tubeaxial Mounting Hole Diameter 1/2 in Material Steel Body Diameter 44 1/4 in Bolt Circle Diameter 36 1/2 in Compatible Curb Grainger Part Number 2RB82 4HX44 4HX52 Finish Baked Enamel For Use With 3C414 Maximum Inlet Air Temperature 200 Degrees F Metal Material Thickness 1/2 in Overall Height 6 in Overall Length 46 in Overall Width 46 in Product Type Curb Cap