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The THOMAS BETTS 58-C-6 is a steel device electrical box cover designed to close and protect standard electrical device boxes in residential and commercial wiring installations. Constructed from steel, this cover provides a durable, code-compliant finish over wiring device boxes where a flush or blank cover is required. It ships with a Phillips head screw for straightforward mounting. Electricians reach for this type of cover when a box must be closed out cleanly, whether for unused circuits or as part of a finished rough-in. The steel construction holds up to the demands of daily trade use.
This cover is suited for device box applications across residential new construction, tenant improvement, and light commercial work. It is used anywhere a standard device box requires a protective cover plate, including junction or device locations that are not populated with a receptacle or switch. The included Phillips head screw makes single-trade installation quick without additional hardware.
Designed as an OEM-style replacement and standard fitment cover for residential and commercial device electrical boxes requiring a blank steel cover plate.
Installation is typically performed by a licensed electrician. Always de-energize the circuit at the breaker and verify the absence of voltage with a meter before working on any electrical box. Secure the cover using the included Phillips head screw, taking care not to over-tighten against the box ears. Work must comply with applicable NEC requirements for box fill and cover requirements.
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