This box is designed for electrical installations and is equipped with a copper grounding section, providing a grounding connection. The dimensions refer to the box size and are 7*7. The copper grounding feature enhances electrical safety by providing a grounding path, which is crucial to preventing electrical shock and ensuring proper operation of the electrical system. This type of switch box is typically used in residential, commercial or industrial environments to install electrical switches and outlets. It is a reliable and durable solution for electrical installations that require grounding capabilities. General specifications: Brand: Al Roof Type: Iron electrical box - 4 modules Size: 7*7*4.7 cm Thickness: 0.9 mm Material: galvanized steel