Slip Resistant Technology.Easy to fit - The Pearlstone Matrix has screw retention so that the feet from the leg set (sold separately) can be screwed directly into the base of the tray. All trays have a flat underside making installation and levelling even easier. Slimline - At just 40-45mm high Pearlstone trays are amongst the sleekest on the market. Perfect for a modern and contemporary wetroom design. Patented Technology - Made of the patented 'Pearlstone Matrix' making the range one of the strongest and lightest available. All trays are acrylic capped and constructed from a polyurethane resin mixed with filler including volcanic ash. Lightweight - The trays are up to 50% lighter than conventional stone resin trays - making them safer for handling and fitting. All shower trays are backed by a lifetime guarantee.With centre waste hole.