These award-winning Gratnells trays are the ideal storage solution for science materials and lab equipment. Made from super-strong polypropylene, they are chemically inert, cadmium-free, and fire retardant, withstanding temperatures up to 108°C. These trays fit Gratnells integrated storage systems and most standard school furniture. Available in various heights and colors, they can be used with foam/plastic inserts and clip-on lids for extra safety.