Abb 72171MS1/23/4 Square Box Mud Ring Steel City

Product Description

The ABB 72171MS1/23/4 is a steel square box mud ring (raised plaster ring) designed for use with standard square electrical outlet boxes. It provides a raised mounting surface that brings the wiring device or cover plate flush with finished wall or ceiling surfaces. This fitting is a core rough-in component installed by licensed electricians during framing and drywall phases of commercial and residential construction. The part features both 1/2 inch and 3/4 inch knockout openings, giving installers flexibility when routing conduit or cable into the box assembly.

This mud ring is suited for commercial and residential electrical rough-in work where square outlet boxes are mounted in walls or ceilings prior to drywall or plaster application. It is commonly used in new construction and retrofit projects where a raised extension is needed to compensate for wall finish thickness. Electricians select this ring when the box depth must be extended to meet the finished surface plane before installing devices or cover plates.

Key Features

• Compatible with standard square electrical outlet boxes requiring a raised mounting surface
• Dual knockout sizing: 1/2 inch and 3/4 inch openings for conduit or cable entry flexibility
• Steel City product line under the ABB brand, a recognized name in electrical fittings and raceway
• Designed for use in drywall and plaster wall assemblies to bring device mounting flush with finished surface

Compatibility

Designed as an OEM-style replacement and standard rough-in fitting for use with square electrical outlet boxes requiring a raised plaster or mud ring extension.

Installation Notes

Installation is performed by a licensed electrician in accordance with applicable NEC requirements. Power must be de-energized and verified with a meter before working on any box assembly. The ring should be secured firmly to the square box before drywall or plaster is applied, ensuring the face of the ring sits flush with the finished wall surface. Do not overtighten mounting screws in a way that distorts the ring face or compromises the flush fit.

Technical Specifications

• Knockout Sizes: 1/2 inch and 3/4 inch
• Package Dimensions (L x W x H): 20.6 inches x 8.1 inches x 12.5 inches
• Weight: 124 pounds
• UPC: 78599102065

Standard Information

• Brand: ABB
• Manufacturer Part Number: 72171MS1/23/4