These Metro Smartwall double shelf supports can be used to join adjacent shelves so you can create side‐by‐side wall shelving units. Single Shelf Supports are required at each end of a side‐by‐side wall shelving system to hold shelves securely. 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.