The Premium shelves (Glass shelf, Stainless Steel shelf and Matte Black shelf) can be used in place of the adjustable shelves in our shower niches. These shelves allow further customization of a shower build. wedi now offers the option to choose a shelf for a niche that matches a premium drain cover finish. These shelves are easily installed with wedi joint sealant, and will add a luxurious touch to any final bathroom design.