This dryer exhaust fan is used on many Admiral, Crosley, Hoover, Magic Chef, Maytag, Montgomery Ward and Norge brands. Size: 3-1/8 inches deep, 8 inch fin diameter, 7-1/8 inch hub diameter, 20 standard fins, 1/2 inch diameter motor shaft, 7/16 inch motor shaft diameter to flat side of shaft. Blower wheel clamp not included. For the clamp order WP312967.Part Number 31001043 (AP4038116) replaces 1371, 53-2045, AH2030820, EA2030820, PS2030820.