Hey guys - need some help here.

Looking for the low voltage single, double, and triple gang adjustable Carlson boxes. My local HD and Lowes don't carry them, and the other ones I hit don't either.

Advise?

Same situation on a normal (blue) triple gang adjustable. Do they make a 4 gang? Is it ok to just cut the back off the blue boxes and use that for my AV wires?

do u need adjustable do the extra thickness of double drywall? What I did, on advice from an electrician relative was to just mount a normal metal box 1"out from the studs (to make up for my 2 x 1/2" drywall).

i also cut off the existing mounting tabs on the side of the box, or bent them back cause u don't need them