Tubeaxial Companion Flange, For Fan Diameter 21 in, For Fan Type Tubeaxial, Mounting Hole Diameter 3/8 in, Material Steel, Body Diameter 23 7/8 in, Bolt Circle Diameter 19 3/4 in, For Use With 4TM84, Includes Predrilled Mounting Holes, Inside Diameter 21 1/4 in, Outside Diameter 23 7/8 in, Overall Width 1 1/2 in, Product Type Companion Flange, 1 Pair