Replacement Sliding Shower Doors

Replacement Sliding Shower Doors So I need to bring in the shower starting to accommodate the door and I cannot find a good rule-of-thumb for the area needed from stud-to-stud for your door area and Now i’m fearful I’ll make the room too narrow.

The ceramic tile to be used in the shower is a natural stone 3/8″ thicker. But with tile, cement panel, thinset, hinges, etc . to think about I’d like to make sure I understand this right.