1200mm x 900mm Offset Quadrant Shower Enclosures. This selection of Offset Quadrant Shower Enclosures requires an 1200mm x 900mm Offset Quadrant shower tray. Offset shower trays are supplied Left or Right handed allowing them to fit in either corner of the bathroom. Our shower enclosures are renowned for performance and reliability so you can have confidence in whichever enclosure you choose. All of our enclosures and Shower Doors are supplied with Toughened Safety Glass as standard and are backed by a full manufactures Guarantee.