Effects rack to sit on top of cab

[u84six]

Hi,
I may have asked this question before in another forum, so please pardon the double post.

Anyhow, I'm going to pre/power amp approach and I need a 6U rack. Any recommendations for some that will sit ok on top of a cab (possibly with rubber feet) and isn't very deep? The units I'm going to put in it aren't very long. Also, I'd like to go with one that has latches that don't rattle.

thanks