The Q's sit flush to the wall on the included T'bracket so there's virtually no space(the woofers fire up and down, tweeters on the angled faces) but I'll mention just a couple of mounting tips...you will have to bare-wire them as there isn't room for banana plugs if you use the T-bracket and also some of us have found it easier to mount the Q on the T-bracket by bending the "lip" of the bracket slightly to help the two halves engage more easily (you'll see what I mean if you end up getting them).
