Features: DIY easy assembly: the simple structure, (Upright, Steel shelf, Gusset, bolt) can build a compelete unit. Height adjustable: the unique pre-punched hole on upright allows you adjust shelf height level easily. Capacity: Light duty shelving, 100kg to 250kg loading capacity per level. Structure: Sturdy, tough, adaptable, rigid when assembled. Versatile design: Easy to relocate and ideal for special purpose designs. Economical, Cheapper cost. . All-purpose slot angle steel upright . Cut-in composite usually with steel panel . Height of each layer can be adjusted freely by pitch of 50mm . Loading capacity: no more than 200kg per level . Simple and quick assembled and dismantled . Loading and unloading by hand . Powder coating finish and various color be available.