A simple slide on additional fan cooling module for the Xiaomi Xgimi Fengmi 4K UST projectors  - helps provide additional cooling to combat the common problem of DLP chip overheating causing image artifacts / dead pixels/ lines and failures as shown in pictures. Avoid an a difficult, expensive complex repair!   Reduces external case temperature by approx 10°C

Powered by USB directly from the projectors and has two high current draw 5V fans which are around 25dB or slightly quieter then the projectors own fan.   Alternatively just buy the case and fit any 60x60x15 (6015) Axial fan of your choice

Fits projectors with side width of 75mm and comes with all screws required