These Super Erecta post mounted shelf supports are epoxy coated and treated with Microban This kit consist of two shelf supports with mounting plates and two shelf collar caps. Use single support at shelf ends; double support for adjoining shelves. For run of multiple shelves. Can accommodate Super Erecta wire and solid shelves, Super Erecta Pro, MetroMax Q, and MetroMax i shelves. 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.