Best Knock Out Electrical Boxes of 2025

The PEUTIER Knockout Plugs come in a set of 20, providing ample supply for your electrical needs. Each plug features a snug fit with outer and inner diameters of 27mm and 22mm, respectively, ensuring they securely seal your electrical boxes. Made from high-quality stainless steel, these plugs are durable and designed to last, preventing breakage or falling out. Their snap-on design allows for easy installation using just fingertip pressure, eliminating the need for special tools. This practical tool helps keep your electrical system clean and protected from dust and debris, making it ideal for any electrical project.

The Hubbell-Raco 8265 electrical box is a 4-11/16 inch square welded box, 2-1/8 inch deep, with one 1/2 inch, four 3/4 inch and four 1 inch KO's and 3 TKO's. It features combination screw heads that provide for faster installation and TKO knockouts that allow for design and installation flexibility, making it easier to install and use.

This plenum box has a drawn construction, 30.3 cu. in. capacity, and is UL listed. It is a 4 in. square electrical box with eleven 1/2 and five 3/4 in. knockouts and 2-1/8 in. depth.

The Hubbell-Raco 8257 Square Box is designed for a wide variety of commercial and industrial applications, capable of accommodating larger-sized conductors and wiring devices. It comes with combination screw heads for fast and easy installation and TKO knockouts that provide design and installation flexibility. With a welded construction, it features one 1/2 inch knockout and fifteen TKO knockouts, raised to accommodate a range of wiring needs.

The BUD Industries Steel NEMA 1 Sheet Metal Junction Box is a durable and heavy-duty electrical box made of welded 16 GA steel that is built to last. The box is easy to assemble with a screwed-on flat cover with keyholes and has four wall mounting holes in the back. It comes with a durable ANSI 65 grey powder coating and measures 6" width by 6" height by 4" depth. This box is perfect for industrial and commercial applications where a sturdy and reliable electrical box is needed.

The OHLECTRIC Electrical Box is a sturdy solution for your electrical needs, crafted from galvanized steel to support multiple devices effortlessly. Its improved design features several knockouts, allowing for easy installation while preventing any interference from plaster or drywall. Safety is prioritized with its fire-rated construction, ensuring compliance with safety standards and providing peace of mind. Additionally, the box includes slotted screw heads, making installation quick and hassle-free, so you can focus on your project without delays.

The Qlvily Electrical Box 8-Pack is designed with versatility in mind, featuring seven convenient 1/2 inch knockouts for various wiring needs. The robust "TS" side-mount bracket ensures easy installation and contributes to the box's long-lasting performance. Crafted from durable iron, this electrical box effectively resists rust, making it suitable for a range of environments. With dimensions of 4 x 2 inches and a depth of 1-7/8 inches, it provides ample space, holding up to 13 cubic inches of electrical connections. This makes it perfect for enclosing outlets and switches securely.

The Hoffman ASE12X12X4 Pull Box is a steel enclosure designed for commercial and general industrial applications that require a junction or pull box. It comes in 16, 14 or 12 gauge steel or plated steel and can be flush-mounted with separately ordered covers and door frames. With its standard UL 50, 50E Listed; Type 1; File No. E27525; cUL Listed per CSA C22.2 No 40; Type 1; File No. E27525; NEMA/EEMAC Type 1; IEC 60529, IP30, this electrical box is built to last.

The Qlvily Metal Electrical Box is designed with ten convenient 1/2 inch knockouts, allowing you to customize your installation for various wiring needs. Its durable iron construction ensures long-lasting use and prevents rust, making it suitable for both indoor and outdoor applications. With dimensions of 4" x 2" and a depth of 1-7/8", it offers a spacious 13 cubic inches of capacity to accommodate your electrical connections. This box is ideal for enclosing connections for switches or outlets, particularly in exposed work settings, making your electrical projects easier and safer.

Airmont Products presents the 4'' Square Electrical Box, a versatile and durable solution for enclosing electrical wire connections, receptacles, or switches. This electrical box is constructed using the drawn method, making it ideal for both concealed and exposed work applications. With ten 1/2'' knockouts and six 3/4'' knockouts, this box offers versatile usage options. Crafted from 1/16'' thick pre-galvanized steel, it ensures long-lasting durability and is acceptable for use in 2-hour fire rated walls. With a capacity of 21.0 cubic inches, this 4'' square electrical box provides ample space for your electrical needs. The raised ground feature adds convenience and safety to your electrical installations. Choose the Airmont 4'' Electrical Box for its durability, versatility, and ease of use.