Feature: 1. 20 Loops Design: The distribution box is 20 loops design, which can be used as a circuit breaker installation box, electronic junction box, etc. 2. With Guide Rail: The built in guide rail is convenient for installing the circuit breaker, building electrical distribution system, house reconstruction, etc. 3. Durable Material: The combination of metal distribution box and plastic cover ensures safe and reliable operation, greatly extends the service life. 4. Applicable Scenes: The distribution box is concealed, suitable for high end residential, hotel or office buildings, with fashionable appearance. 5. Easy Installation: After matching the appropriate model and size, fix it on the wall with screws, and then install other electrical components. Specification: Item Type: Distribution Box Product Specification: 20 Loops Product Material: Cold Rolled Steel Plate, PC Cover Plate External Size: Approx. 438 x 210 x 100mm / 17.2 x 8.3 x 3.9in Bottom Box Size: Approx. 412 x 190 x 85mm / 16.2 x 7.5 x 3.3in . Package List: 1 x Distribution Box1 x Cover2 x Screws Note: 1. When the box is installed on the wall, the installation depth must not exceed the wall (coating) by 0‑20mm. 2. During the installation of the project, the grounding bolt on the product must be reliably connected with the upper grounding system. The metal panel and terminal block of the bottom box must be grounded to prevent accidental electric shock. In the process of engineering installation, if the grounding bolt is found to be loose or covered with plastic coating, please do not use it directly.