I am installing a new corner shower unit (replacing the old one). New unit consists of a base and two acrylic walls.
The previous unit was secured to the studs, the new unit requires drywall as it is a thin acrylic material.
My question refers to the plaster ground of which is 4 1/2 inches wide.
I cut a hole in the drywall 3 inches wide (the hole has not yet been cut out for the acrylic shower wall).
When I install the drywall into place the hole is perfect and the plaster ground now sits behind the drywall.
The valve sticks out past the drywall about 3/4 inches.
I have been reading that possibly I should cut out a 4 1/2 inch hole instead of 3 inches so that the
plaster ground sits flush with the finished wall, in this case it would be the 1/2 inch drywall plus the 1/8th acrylic wall.
Can I use any method, 3 inches vs 4 1/2 inches? Or do I need to cut out 4 1/2 inches hole and have the plaster guard sit flush with the finished wall?