EDIT: So, as mentioned in my previous review, I thought the noise from one of the fans was user error. BUT after using my MacBook, as I usually do for a few days after installing a fan, there is a faint but definitely audible rattling noise coming from the new fan. When my room is quiet and I'm not typing or clicking the mouse, that noise is there, right next to the new fan. It's not too distracting, but it's definitely NOT OEM quality. I am changing my rating. Fits perfectly on my 15" Retina MacBook Pro Mid 2015. Not sure if I ruined one or took the fans out of the box but one of them, the right one, rumbled. I took it off, put it back on I was careful not to overtighten the screws twice but it still rattled. The other fan is silent. I put my old non-rattling fan back on the right side which was fine.
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