Empervious shower pans are made of a 100% waterproof XPS foam core, reinforced with fiberglass mesh and finished with a cement coating for added durability. Each pan has a notched edge for easy installation creating a tight seal to your wallboard for extra protection. Available in 14 sizes to accommodate any shower configuration, including offset drain options. Each shower pan includes a solid brass drain assembly and stainless steel grate, mesh tape for the entire shower and a flat and corner putty knife. Joint sealant sold separately in a 10 oz tube or 20 oz sausage.