Re: shower wall kits
You already have access to the front of the wet wall, why would you chop a hole from the back to create another? While you can do this, cut your work to nearly zero and do it from the front before you install your panel, here's why.
The back side is undoubtedly a finished wall, correct? Even if it's hidden in a closet, you will have to repair and paint it, hopefully well enough to blend in like it was never done. This takes time, a whole lot of it! If you do it from the front side, all you have to do is "fire tape" the drywall repair because you're covering it up with a shower wall panel. Even if this is a fiberglass unit that you're installing, all your work is already in the bathroom, why not keep it that way? Less work overall, and it's not that difficult to take some measurements to determine where to cut the hole in the shower panel.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!