The Fulleto XL-21 series is an indoor, floor-standing power distribution cabinet engineered for excellence. Standard Type (P Type): This version has a cabinet height of 1700mm or 1800mm and is designed for independent installation. It can be equipped with entry and exit holes at the top as required. Designed for power plants, substations, industrial enterprises, and commercial. The XL-21 Power Distribution Box is used for power distribution, conversion, transmission, control, and on-site operations in low-voltage distribution systems. The XL-21 Power. The main distribution box adopts self-design of new components, compact structure, beautiful appearance, easy maintenance, a variety of wiring options for users to choose, it is an ideal alternative to the old XL-21 power cabinet.