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The THOMAS BETTS CFSB is an aluminum electrical box cover designed to protect and seal electrical enclosures in residential and commercial installations. Constructed from aluminum, the cover provides durable, corrosion-resistant closure for compatible electrical boxes. Each unit ships with a gasket and mounting screw included, making it a complete assembly for field installation. Electricians and maintenance technicians rely on covers like the CFSB to secure wiring compartments, prevent moisture intrusion, and maintain code-compliant enclosures. The aluminum construction keeps weight low at 0.2 pounds while delivering lasting performance in standard electrical service environments.
The CFSB is suited for use in typical electrical box applications found in both residential and light commercial settings. It is installed wherever a finished, sealed cover is required on a compatible electrical enclosure. The included gasket supports a tighter fit between the cover and box face, which is particularly useful in locations where dust or moisture management is a concern. Licensed electricians performing panel work, junction box service, or enclosure maintenance will find this a straightforward drop-in cover solution.
Designed as an OEM-style replacement cover for standard electrical enclosures requiring an aluminum cover plate with gasket seal.
Installation should be performed by a qualified electrician in accordance with applicable NEC requirements. De-energize the circuit and verify absence of voltage before removing or installing any electrical box cover. Seat the gasket evenly around the cover perimeter before fastening the screw to ensure a consistent seal. Do not overtighten the mounting screw, as aluminum covers can deform under excessive torque.
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