Question How to clean PSU fan filters and the front fan filters of my Thermaltake H15 case

if they are removable,
just wash them out.

i take the front and bottom filters from all of my cases and just spray through them with my sink faucet sprayer,
wipe them off with a towel, and let them dry for a short period before returning them.

if not removable,
use a vacuum attachment with a strong suction.