Pearlstone Offset Quadrant Shower Tray 1200 x 900mm RH is constructed from a polyurethane resin that is mixed with filler and includes clay beads for added strength, making the Pearlstone one of the strongest and lightest trays available. The low level Pearlstone Shower Tray is only 40mm high and is up to 50% lighter than a conventional resin stone tray.