40mm Fan Adapter

thingiverse

I have had the worst luck with noisy 40mm centrifugal fans. After a while, the fan's get noisy as their bearings wear out. This fan is meant to install in exactly the same position as the centrifugal fan. it also fits many existing fan nozzles. some nozzles that affix to the outside may need to be trimmed a bit. I recommend this nozzle: https://www.thingiverse.com/thing:2086191