The original attic fan van metre put in lasted a good 14 years or so. Last year I replaced it with this one from Amazon https://www.amazon.com/dp/B000LNII4Q Do not recommend buying that one. Died in less than a year of use and now I am in need of another motor/thermostat. What makes it more difficult is vm installed the shroud from the exterior so you can't just unscrew the old one internally and put a new one up. With the one above I had to disassemble it and install the motor/fan/thermostat in the existing shroud. Has anyone found a good replacement? The ones at Lowe's/hd don't have great reviews either. I'm perfectly fine doing the work myself I just need to find a quality replacement so I'm not doing this again next year.