The PREMIUM ZK linear shower drains are a series of WIPER linear drains complete with a membrane that helps with installation of the product in a floor system which features a water-proofing course. The flange is bent verticaly (and with many options available) which facilitates installation at the floor-to-wall corners with an optimum offset between the grate and the wall tiles. The finished installation provides a smartly refined grate and frame of stainless steel, 84 mm wide and as long as ordered, which means virtually any length desired. The product is available in many versions to suit the needs of diverse projects.