The driveshaft on this motor is thicker and slightly longer than the original motor, the she replaced. I had to use 1/4 thick rubber washers to pad it so it wouldn't rub. The stock steering column didn't fit so I had to buy a plastic fan to get it working. The fan suggested by Revain was too big, but Broan S99020276 Blower Wheel and Housing worked great. It's a bit noisy, but the air moves well. FYI, keep all the brackets from your original fan as this is just a bare motor.
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