All rvs are different I have full size shower in mine
We have 2 in our motorhome, one 30x36, the other 30x30
They vary on who builds them. I do not believe they any standards..
There are many different sizes. The length of the rv makes a big difference as to how large the shower is.
I highly recommend the shower with hard door. The ones that use a curtain are smaller and it is very hard to balance and keep the curtain from sticking to u while bathing. Plus the length of curtain is often too short or too long...
They are different depending on model. Use rv trader app and browse models and see pictures.
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