The Metro MF-184874G-A-4 is a durable all-plastic shelving unit designed for versatility and strength. Measuring 48"W x 18"D x 74"H, this MetroMax® 4 Add-On Shelving Unit features four open grid polymer shelves, each capable of supporting up to 800 lbs, with a total unit capacity of 2000 lbs. The shelves come with removable mats for easy cleaning and maintenance. Included are four wedge connectors for secure shelf attachment, two sturdy polymer posts, and eight "S" hooks for seamless end-to-end configuration. Enhanced with Microban antimicrobial product protection, this shelving unit is ideal for environments requiring hygiene and durability. It is NSF certified and comes in a knockdown (KD) design for efficient shipping and assembly.