Square Electrical Box Extension Ring

Adding a square box extension ring to a square junction box increases wiring space. The extension ring features knockouts on the side, thus providing users with more wiring interface.

When users want to add new wires to an existing junction box, but there is not enough space, more space can be added by installation an additional square box extension ring on the existing junction box, with no need to remove either box.

In addition to the products listed on this page, we also provide custom services for electrical conduits and fittings. Customers can choose different materials, such as steel, aluminum, zing, cold die cast, or hot die cast processes for their products. You can also choose different production standards and metal surface treatment methods according to your needs. If you want to buy stock products, or have custom conduit fitting needs, just let us know and we will quickly provide you with high-quality products.