I bought this frameless model for my shower project. I didn't follow the product's installation instruction by not using rails it provides, but choosing to install shluter deco st trim to make it more frameless, while with no need to drill holes on my glazed porcelain tile. Besides that, I also added a drip rail at the bottom of the panel by gluing and mortaring a piece of aluminum cap trim on top of a line of glass mosaic tiles