Usually consist of upright frames , beams, steel panel and brace. These make firmly and standable. Meanwhile, it also can be easy adjustable in 50mm step distance so that make itself flexible.

Its load capacity usually between 300kg-100kg / level. Panel can be made by steel panel, wood panel or mesh decking. Panel put on beams to load the large capacity. Between the beams can fix on mesh sheet or other sheet . It can save space and suit for seldom quantity and more varieties, small items to store.