Discharge Cap For Fan Diameter 42 in For Fan Type Tubeaxial Mounting Hole Diameter 3/4 in Material Galvanized Steel Body Diameter 50 1/4 in Finish Unfinished For Use With 3C415 Includes Clam Shell Damper Maximum Inlet Air Temperature 200 Degrees F Overall Height 44 3/8 in Overall Length 50 1/4 in Overall Width 50 1/4 in Product Type Discharge Cap