5/16 Diameter x 1 13/16 Length Shaft. Top Quality Sealed Bearing - Exceeds all OEM & aftermarket standards. Earth Sense has invested extensive testing and time to insure the quality of this replacement motor is equal to or better than the OEM and other aftermarket replacements. Note: You will need to remove the old combustion fan paddle and place on the new motor once installed into the old housing. Using heat and/or lubricant is recommended in removing the old combustion fan paddle blade.Over 25 years of trusted value and commitment to our customers. The item "P22, P23, P24, P1000, P2000, P2700, P4000, P6000, P7000 Fan Motor PH-UNIVCOMBKIT" is in sale since Friday, March 6, 2015. 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.