Not my site starfox, but I do have a 120mm fan as my blowhole. It's pretty quiet actually. I alos took an old porch screen and cut out a makeshift filter and attached a 120mm fan grill tot he top, stops me from putting my fingers in it when I reach for my coke and stops it from sucking in one of my cats tails . I'll check and see what fan it is exactly (I can't remember) and post back with the actual CFM speed and Db.
EDIT: Here's a link for that fan sorry to use the same site, but I buy alot of stuff from him/her (?). He's based in FL I think so it gets to me almost next day on Fedex's cheapest shipping