Metro qwikSLOT 2 tier wire enclosed mobile wire shelving security cages are great way to keep sensitive items secured and mobile. qwikSLOT unique shelf and post design combines the benefits of a security cage with easy to adjust. this Unique qwikSLOT shelf design allows middle shelves to be added, removed, and adjusted quickly without tools. These units are supplied with 4 mobile qwikSLOT chrome posts, 2 Super Erecta wire chrome shelves for top and bottom, all the chrome enclosure panels, hardware, 2 swivel polyurethane casters, 2 brake polyurethane casters and 4 impact bumpers . The qwikSLOT inter mediate shelves are not included and must be ordered separately. Each Super Erecta wire shelf has a 600 – 900 lbs. and each qwikSLOT shelf has 300 lbs weight capacity. weight capacity depending on the shelf size. The chrome units are not suitable for laboratory and sterile environment. (please contact us at 240-457-4413 for additional information).