Many engineering-grade devices use a 19-inch panel width, so a 19-inch cabinet is the most common type of standard cabinet. The structure of the standard cabinet is relatively simple, mainly including the basic frame, internal support system, wiring system, and ventilation system. The 19-inch standard cabinet has three conventional indicators: width, height and depth. Although the installation width for 19-inch panel equipment is 465.1mm, the common physical width of the cabinet is 600mm and 800mm. The height is generally from 0.7M-2.4M, according to the number of equipment in the cabinet and the unified style, usually manufacturers can customize a special height, the common finished 19-inch cabinet height is 1.6M and 2M. The depth of the cabinet is generally from 400mm-800mm, according to the size of the equipment in the cabinet, usually manufacturers can also customize products with special depths, the common finished 19-inch cabinet depth is 500mm, 600mm, 800mm. The height of equipment installation in a 19-inch standard cabinet is expressed by a special unit "U", 1U = 44.45mm.

capacity
Refers to the effective use of space inside the cabinet or console, generally U as the unit. (1U = 4.45cm) Equipment panels using 19-inch standard cabinets are generally manufactured according to nU specifications. For some non-standard equipment, most can be installed in a 19-inch chassis and fixed by an additional adapter plate.

Door and door lock
Among cabinet products, doors and door locks are mainly used to protect the safety of equipment. Some products are specially installed with anti-theft electronic door locks, and some products are also designed with front and rear door switches or double-open back doors to facilitate installation and disassembly. Network cabinets, industrial control cabinets, integrated wiring cabinets, aluminum profile cabinets, industrial computer cabinets, server-specific cabinets, and Guangdian cabinets are mostly used for 19-inch standard design and production