MetroMax® 4 Shelf Collar Plug/Corner Adapter is essential for securing each MetroMax® 4 shelf when utilizing wall shelf supports. This set includes four adapters, ensuring stability and proper alignment for your shelving system. Designed for easy installation, these adapters enhance the functionality of your shelving setup, providing reliable support and maximizing storage efficiency. Ideal for both commercial and residential use, they are a must-have accessory for any MetroMax® 4 shelving configuration.