I'm working my screen redesign and in order to squeeze in four of these into the design, the aesthetics say that 3.6cu (taking into account bracing only) is as large as I can go. I can go larger but it requires me to disassemble parts of the screen wall, install the box and then put the wall back up. Not terrible during construction but if I have to remove the box in the future it will be more of an issue.
Probably not the end of the world, but wondered if getting an extra .5cu is worth the effort. I will be powering all four off a CV-5000. Thanks!