Tubeaxial Companion Flange For Fan Diameter 48 in For Fan Type Tubeaxial Mounting Hole Diameter 5/8 in Material Stainless Steel Body Diameter 50 1/4 in Bolt Circle Diameter 32 1/8 in For Use With 4GXU7 Includes Predrilled Mounting Holes Inside Diameter 48 1/2 in Outside Diameter 50 1/4 in Overall Width 1 1/2 in Product Type Companion Flange