I'm using an antec clone case which has those harddrive racks/compartments that you can detach and fit a fan. I had a spare 80mm case fan which I tried fitting in there but there were obvious fitment issues. The other rack/compartment was shipped with a fan brace, but one without.. to make a long story short, I'm wondering if the rack/compartment would accommodate a 120mm fan without the brace or is that too big? The only one's I've seen are 80mm, 92mm, 120mm.

so..

a) will 120mm fit nice and snuggly in there?
b) is there any size between 92-120mb? i.e 100,110mm ?

thanks