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 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.