This 21" x 48" Super Erecta shelf is perfect for maximizing space. The open‐wire design allows a free circulation of air and great visibility of stored items. This shelf also features a Metroseal 3 Epoxy finish that is corrosion resistant for wet or high humidity environments. It contains Microban product protection. Antimicrobial properties are built in to inhibit the growth of bacteria that may affect this product. The antimicrobial properties do not protect users or others against bacteria, viruses, germs, or other disease organisms. Always clean and wash this product thoroughly before and after each use.