Yeah, the extra holes I drilled and one of the the sanded sides. Had a decent ridge I had to get rid of on all four sides, the front lip of the side panels kinda have to cram in beside the fan, but, it closes so I'm happy.
But why print this in the first place? A standard computer vent costs what, less than 20? Probably way cheaper even, if you buy non brand. Can’t see how the materials, time and power consumed isn’t more expensive than that
E: somehow thought myself in a 3d printing community, my bad.