Thomas & Betts CBP Steel City Concrete Box Cover Plate, Flat, Pre-Galvanized Steel, 4-Inch x 4-Inch

Thomas & Betts CBP Steel City Concrete Box Cover Plate

The Thomas & Betts CBP is a Steel City flat concrete box cover plate engineered for concrete box and ring installations in commercial and industrial electrical systems. Constructed from pre-galvanized steel, this 4-Inch x 4-Inch cover plate features a combination knockout configuration that provides flexible conduit entry options while maintaining a clean, flush finish over concrete boxes. Designed to seat directly over the concrete box or ring opening, the CBP cover plate helps protect wiring connections from debris and moisture during and after the concrete pour. As part of the trusted Steel City line manufactured by Thomas & Betts, this cover plate delivers a durable, corrosion-resistant solution for sealing and finishing concrete box openings in poured concrete floors and walls.

Key Features

• Trade Size: 4-Inch x 4-Inch dimensions designed to match standard concrete box and ring openings.
• Durable Construction: Pre-galvanized steel construction resists corrosion and provides long-term durability in concrete installations.
• Flat Cover Design: Low-profile flat plate sits flush against concrete surfaces for a clean, finished appearance.
• Combination Knockout: Combination knockout configuration allows flexible conduit entry sizing at the time of installation.
• Steel City Series: Manufactured as part of the Steel City product line by Thomas & Betts, a recognized name in concrete box and fitting hardware.
• Concrete Ring Plate Compatibility: Designed to pair with concrete rings and boxes for a complete, finished cover assembly.
• Concrete Installation Ready: Purpose-built for use with concrete boxes and rings in poured concrete slab construction.
• Compact Profile: 4-Inch x 4-Inch footprint fits standard concrete box openings without oversized overhang.

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Typical Applications

• Concrete Box and Ring Cover Installations
• Commercial and Industrial Concrete Construction
• Floor and Wall Conduit Access Points
• New Construction and Renovation Concrete Work
• Junction and Pull Box Finishing in Poured Concrete
• Floor Box and Poke-Through Assemblies

Why Thomas & Betts?

Thomas & Betts backs the Steel City CBP concrete box cover plate with pre-galvanized steel construction built to withstand the demands of concrete installations. The combination knockout design gives electricians flexibility on the job site, while the flat cover profile helps ensure a clean, professional finish. With its combination knockout and flat, low-profile design, the CBP cover plate simplifies field installation while keeping concrete box openings protected until conduit is run and terminated. Choose Thomas & Betts Steel City hardware for reliable, code-ready performance in commercial and industrial electrical work.