1/4 Diameter x 1 13/16 Length Shaft. Top of the Line Needle Point Ball Bearing Motor - Exceeds all aftermarket & OEM standards. Over 25 years of trusted value and commitment to our customers.Note: You will need to remove the old combustion fan paddle and place the new fan paddle on the motor once installed into the old housing. Using heat and/or lubricant is recommended in removing the old combustion fan paddle blade. The item "US Stove King Combustion Exhaust Fan Motor Blower 80473 + 4 3/4 AMP-UNIVCOMBKIT" is in sale since Wednesday, November 22, 2017. This item is in the category "Home & Garden\Home Improvement\Heating, Cooling & Air\Fireplaces & Stoves\Replacement Parts". The seller is "esesstoves" and is located in Dale, Wisconsin. This item can be shipped worldwide.