I purchased this exact same motor about 3 years ago and it burned out. I expect this replacement to last about 3 years too, so I bought two of them which offers a substantial discount over purchasing just one. That way I am good for 6 years! I plan to install this replacement with wing nuts and lock washers so that it is easy to remove and replace in 3 years. My most positive comment is that MmCombs supply stocks these motors and I have not been able to find them anywhere else! At least I do not have to replace the entire attic fan!! It would be nice if they offered a core fee to return the burned out motors, but if they started to rebuilt these then they would probably only last a year. I plan on putting the burned out one into the recycle bin....