120x120mm Fan Mount for Prusa IKEA Lack Enclosure

### What is it?

Mount for a standard 120x120mm computer case cooling fan. Slides into the top of a ~129x129mm cutout at the top middle of the rear acrylic sheet for the Prusa IKEA Lack Enclosure.

### Why would you want a fan?

Particularly with PLA, a high ambient temperature screws with print quality. A little ventilation goes a long way to keeping the enclosure temperature low.

This is more effective than leaving the doors open. Also, keeping doors closed keeps cat hair out. :)