My bathtub is open on two sides (the long side and the short side opposite the faucets. I would like to install a bathtub/shower glass door on my tub but because it’s open like that I would have to get it custom made which would cost about $900. I would like to know how to build a return panel – basically a glass framed wall to put on the short side of the tub. Then I could install the readily available shower doors on the long side of my tub.