Plastic sheets – matte shelf inserts These matte plastic sheets fit our TUBO shelves in size 60 x 44 cm and work as inserts or shelves on wire shelving. The matte sheets are slightly more transparent than our frosted version, while still offering a subdued and elegant appearance. Dimensions: 58.5 × 44 cm. Surface: Matte The image shows the three variants: frosted, matte and white. Note: The matte version is the most transparent of the three.