My wifes grandparents are both about 80 and have trouble getting around, especially her grandfather. My inlaws have been taking him to their house to give him showers. But with the New England weather being pretty nasty lately, and a long cold winter outlook, they need a stall in their house. They have 2 bathrooms in their one floor house but both have a plain old fashined bathtub. My father in law and I are planning on putting in a shower stall because it is much easier for them to take a shower. Anyone have any ideas on what stall would be best? A square one thats 36" each way? or a four foot long one? I think grab bars would be a plus. Any ideas are appreciated. And their is plenty of room in their larger bathroom, plus I can access all plumbing from the basement. Thanks for any input!