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The EATON TP480 is a square mud ring designed for use with 4-inch square electrical boxes. It provides a flat, single-device mounting surface that brings the box face flush with finished wall or ceiling surfaces after drywall or other finish materials are applied. Fabricated from steel for durability in commercial and residential electrical rough-in work, this mud ring accepts one device — such as a switch, receptacle, or other standard wiring device — and is installed by licensed electricians during the finishing stage of an electrical installation.
This mud ring is suited for residential and light commercial applications where 4-inch square junction or outlet boxes are used. It is commonly installed in wall and ceiling assemblies prior to finish work, allowing the box to sit at the correct depth relative to the finished surface. Electricians working on new construction or renovation projects rely on flat mud rings to achieve code-compliant device mounting depth without additional adapters.
Designed as an OEM-style replacement or standard accessory for use with 4-inch square electrical boxes in residential and light commercial wiring installations.
Installation is performed by a licensed electrician. De-energize the circuit and verify the absence of voltage before beginning any work on or near the associated electrical box. The mud ring should be secured to the square box before finish materials are applied so final surface depth can be confirmed. Work must comply with applicable NEC requirements for device box fill and mounting depth.
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