This Camshelving® unit is made with a composite material that is 60% lighter but just as strong as steel. Just like other Cambro® shelves, the element series is easy to set up and clean. The Camshelving® unit can adjust and change configurations as well. There is Camgaurd® antimicrobial protectant embedded into the structures four slotted shelves. Additionally, each Camshelving® unit has a lifetime warranty against rust and corrosion!