PC fan adapter (2x 5.25 inch bay size)

thingiverse

Fan adapter for PC. Sized for a standard 120x25 mm fan. Takes up 2 full-size bays (5.25 inch size like older DVD drives). Fan can be mounted as either intake or exhaust depending on your preference. Designed to be printed face-down (this helps get a cleaner print on the front assuming you have a smooth surface like a glass bed). Can be a little tricky though, with all cooling holes - if having issues, use a little glue stick and/or slow down your print speed for the first few layer (I used 10 mm/s for the first 2 layers, follwed by 80 mm/s for the remainder).