GentleTyphoon 120x120x25mm Silent Case Fan Series D1225C12B

You'll need to splice the wires in to certain models but it's easy since they are color coded, repaired a GE refrigerator for someone fast though. Works great.

Got the PWM 2150 RPM edition of these fans after watching them compared in terms of noise and performance to a stack of industry leaders in an Optimum Tech comparison in 2020. In that comparison, these fans came in a very close "2nd" only to the fair bit more-expensive Noctual 12A fans, which cost a fair bit more. Had never heard of them before that, but in further research, these have been consistently great in every other mashup I found. Gave them a chance; and very very glad I did. These are awesome, dead-silent in my mini-itx build and set to treat me well for years to come. Very pleased!

Still top notch fans

Amazing fans for PC watercooling. Running strong after 4 years of insane hours. Still quiet and still good looking.