PC Growers -Need advice

I just got my PC growbox last week, and my exhaust fan is pretty loud.

One thing it may be is it came with a light guard which is a piece of black paper taped in an arc around the fan making the air travel up below and above the fan.

I probably need that on it so maybe someone could suggest some fans that are meant to be super silent. (please only reply if you actually have a grow box with computer fans on it)

I need it to sound like a computer.

Thanks for the help guys.

as long as its a pc fan it should sound like a pc working ... but keep in mind if it is direct wired - it will sound like a pc that the fan nvr shuts off in ^^