Nexel poly-z-brite wire shelving add-on unit nexel poly-z-brite wire shelving add-on unit the poly-z-brite finish of these wire shelves is so tough that we offer a 15 year limited against rust and corrosion. It features nexgard an anti microbial agent that protects the epoxy coating from growth of bacteria mildew and molds. The easy-slide shelf surface makes loading and unloading a snap. Shelves adjust at 1 increments on numbered posts for easy alignment. Assembles and adjusts without tools. This add-on unit includes 2 posts 4 shelves snap-on sleeves and hooks to join shelves. Specifications color: clear size: 54 x 54 x 18 in. Assembly: unassembled construction: steel shelf capacity: 600 lbs Sku: glb32288 Brand: Nexel Size: [18 L x 54 W x 54 H]