Bypass or sliding door dimensions alcove shower bathtubs commonly are 60 inches wide and their bypass or sliding doors are usually about 58 inches.
Gap above shower door.
Raised decorative metal panels that are designed to look.
Between the thinset or mastic whichever you.
There is an extractor in the ceiling about 50cm away from where the door will be.
This dimension might be direct to stud or between two wall coverings.
The one i like twyford t4 or geo6 is 1 9m.
Decorative panels intended for use as backsplashes on kitchen and bathroom sinks can be installed above the shower surround.
Question is will it be a problem only having a 6cm air gap above the door and side panel.
Shower enclosure seem to come in 1 85m 1 9m and 1 95m.
That s with floor to door top height of 7 feet.
Sliding door operation requires no floor space for opening door.
A small gap above the door can be filled by weatherstripping which is flexible and will conform to the gap filling the space up and preventing air from entering and exiting.
When framing the alcove do not add any extra space to accommodate the shower tub.
The door guy said 24 inches is a good number depending of course on your ceiling height.
The edge seal along that edge is probably there to hide the condition you are describing.
I think it is reasonable to reject the 1 4 difference in size of the gap between the door and fixed panel.
Different types of weatherstripping are made from rubber felt and foam.
Bypass or sliding shower doors are a common solution for a small bathroom or bathtub showers.
Ideal for wide openings with a typical opening of 60 inches wide.
Tear off the tile of the existing wall in question.
Then build it out with 1 2 hardee board or durock and then cover it with tile.
Some are nailed on some have adhesive backings and some slide into a notch in the door jamb.
The industry standard is 1 16 but i think even that is pushing it.