Summary

I hate - HATE - the plastic feet that come with these floor box fans. The plastic gets brittle and they break and fall off. I decided to design new feet that when printed with TPU are essentially indestructible and isolate the fan vibrations from the floor.

I used SainSmart 95A TPU, although any relatively rigid TPU/TPE or even flexible PLA should work fine.

For hardware you'll need two 8mm or longer M5 screws along with washers and nuts.