Noble Co. has introduced a new ProBase tub replacement style with an end drain location. ProBase is a one-piece, waterproof, pre-sloped shower base that is ready to be tiled. ProBase is a composite made from high-strength polypropylene honeycomb with a Noble Sheet Membrane laminated to the topside. It can be used with standard clamping ring drains and allows for up to 2” of adjustment in the drain position.