Like I said in my previous to your question, the EVGA psu has same height and width as OEM psu, just a little longer.  you will be able to close case door.
I did say this before, but just wanna make sure. So when I install the evga 550w psu in my dell optiplex 7010 MiniTower, will it be able to fit? That’s all I want to know like even if it’s a bit bigger can it still fit so the case will close and everything?
EVGA 550w psu in Optiplex 7010 MiniTower