Award-winning Gratnells trays offering quality and value. The world-renowned Gratnells trays are the perfect solution for storing science materials and equipment. Use as part of the Gratnells integrated storage system, or in any school furniture which employs a 312mm tray width. Each tray is made from super-strong polypropylene (able to withstand 108C) and is chemically inert, cadmium free, and fire retardant. Available in four different heights and a wide range of colours, the trays can be fitted with Gratnells foam and plastic inserts and clip-on translucent lids for extra storage safety. Gratnells offers a full five year guarantee on all its products. Features: BSI tested and passed for heavy educational use .Choose from a wide range of colours (please contact Customer Services if the colour you require is not listed below) All trays fit standard school furniture.