I am replacing a one piece shower stall that measures 46″ wide by 34″ deep. I cannot find a 46″ wide shower base and the shower is in between two walls and the measurement is not flexible ( 48″ is not an option ). Where can I get a 46″ wide base ?
You in luck living in NY State. All you need to do is contact a local Master plumber.
Have this LMP do what I did in Wappangers falls and Beacon and that is install a Lead shower pan using 4 Pound per square foot (PSF) sheet lead and 6″ walls on each side.
By having a highly skilled LMP you can have almost any sized shower pan custom made to fit this space.
You could also go to a custom ‘cultured marble’ place and they can mold a shower base to your exact size needed. You could also have them mold matching wall panels for the shower surround walls. Color and cast-in-place designs (soap dish, trim bands, raised patterns, etc.) could be to your choice.