The offset quadrant shower tray is for those who want a quadrant shower enclosure and tray but with a bit of added space. Shop Offset Quadrant Shower Trays at Bathroom Shop UK. Offset quadrant shower trays are extended versions of quadrant trays, featuring an extended width that allows for a more spacious cubicle. Stone resin shower trays are fast becoming the most popular choice. We also stock a huge range of rectangular shower trays, quadrant trays, and square shower trays for you to explore. All top brands for shower trays such as Matki showering, kudos showers, just trays, and more. Our offset quadrant shower tray and quadrant shower bases all boast lasting, dependable quality.