Gratnells Foam Insert for 30 + 1 Calculators (70 x 12mm) for F2 Tray. 50mm Standard FoamGratnells provides high quality storage systems for early years and school classrooms and libraries. Their range includes storage trolleys and frames as well as high quality plastic tote trays and tubs. Their range is designed and manufactured in the United Kingdom and the company started in 1890. They have been awarded the prestigious Manufacturing Guild Mark from The Furniture Makers’ Company and are ISO 9001:2015 certified. They continually invest in new technology to improve their manufacturing skills and product ranges. Gratnells are known around the world for providing high quality and long lasting classroom furniture and storage options. Their furniture features metal frames, safety runners and durable castors. Their designs provide versatile and flexible storage solutions. They are perfect for Maker Spaces as well as supporting STEM and STEAM-based curriculum. Gratnells is a the world leader in providing high quality storage solutions for classrooms. All Gratnells furniture is suitable for primary school, high school and also in early childhood classrooms.