The Alkon 150 x 110 x 75 mm Black Hippo Bin (612/S) - Pack of 21 is a strong, heavy-duty storage bin made from polypropylene copolymer. It features a rectangular shape with outside dimensions of 150 mm (length) x 110 mm (width) x 75 mm (height) and an effective inside height of around 40 mm. The bin has a strong rear lip for use with louvre panels or rails, a rounded base, reinforced sides, and a stacking rim for durability and easy stacking. It is resistant to most industrial solvents, designed for industrial and office use, and allows clear access to contents. The bins can be stacked one on top of another and have identification card holders for easy organization. This product is manufactured in India and typically packed in standard quantities (Pack of 21 in this case) suitable for bulk use or resale.