My RV has a bath tub!

What were they thinking when they designed this? My bath cubicle is 4 feet by 4 feet and half of that space is taken up by the toilet and a place to stand up in.

So the other 4 feet by 2 feet is a bath tub!

Now take away about 4 inches on both ends and about 2 inches on either side for the tub structure and you have 40" X 20" and about 20" deep.