. 900 X 760 Left Hand Offset Quad Shower Tray Summary Our 40mm shower trays are perfect for a modern & contemporary bathroom design. Made with patented technology making these trays one of the strongest & lightest available all trays are acrylic capped & constructed from a polyurethane resin mixed with filler including volcanic ash. Features. White Finish Offset Quad Shower Tray.. Length 900mm.. Width 760mm.. Depth 40mm.. Raised Edge.. Waste Not Included.