I have a contractor asking if this type of product can be installed over a tub. I have no product specifications other than he says it is powered by 120v and he can get it in tempered glass. I am assuming since it is an exterior window that it is designed for wet/damp locations. Anybody familiar with this or any code section it violates? I can't see where it involves 406.9(B) or 410.10(D) where most of my tub issues are resolved.