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RACO 868AMR 4-11/16 in. Adjustable Mud Ring Cover, Single Device, Square
The RACO 868AMR is a 4-11/16 in. square adjustable mud ring engineered to mount a single device—such as a toggle switch, receptacle, or dimmer—flush with the finished wall surface when paired with a 4-11/16 in. square electrical box. Because the ring's depth is adjustable, installers can fine-tune the device opening to match varying wall thicknesses, from thin drywall to thicker plaster or tile assemblies, without swapping parts. The square profile of the 868AMR is purpose-built to align precisely with standard 4-11/16 in. square box openings, and the cover carries a UL Listing for use on code-compliant commercial and residential wiring projects.
Key Features
- 4-11/16 in. Square Box Fit: Sized specifically for 4-11/16 in. square electrical boxes, the 868AMR mud ring seats securely over the box opening for a clean, professional appearance.
- Adjustable Depth Design: The adjustable mud ring lets electricians set the device mounting depth on the jobsite, compensating for different wall material thicknesses so the finished device sits flush with the surrounding surface.
- Single Device Opening: Configured for a single device—switch, receptacle, or similar—the 868AMR keeps the installation compact and simplifies device trim-out.
- Square Shape: The square geometry matches standard square box footprints, reducing gaps and providing a snug, secure fit against the box.
- Raised Cover / Mud Ring Function: As a raised device cover, the 868AMR bridges the distance between the recessed electrical box and the finished wall, a critical step when boxes are installed before wall material is applied.
- UL Listed Construction: Independently UL Listed, the 868AMR meets recognized safety standards for use in commercial and residential electrical systems.
Certifications & Compliance
- UL Listed
Technical Specifications
- Product Type: Cover
- Product Size: 4-11/16 in
- Product Shape: Square
- Certified Listed: UL Listed
Typical Applications
- Single-Gang Device Mounting in 4-11/16 in. Square Electrical Boxes
- Switch, Receptacle, and Dimmer Installations
- New Construction and Remodel Wiring Projects
- Drywall, Plaster, and Tile Wall Assemblies
- Commercial and Residential Electrical Systems
Why RACO?
RACO has long supplied electrical boxes, covers, and box accessories that electricians rely on for consistent fit and code-compliant performance. The 868AMR's UL Listed rating and field-adjustable depth reflect RACO's focus on practical, jobsite-ready hardware that simplifies device trim-out. When flush, secure device mounting matters, the RACO 868AMR adjustable mud ring is engineered to deliver on-site reliability, precise fit, and a finished look installers can stand behind.
Manufacturer Resources
Spec Sheet
Product Specs
- list_batch:
- RACO-20260916
- Product Type:
- Adjustable Plaster Ring
- Product Size:
- 4-11/16 in
- Product Shape:
- Square
- Certified Listed:
- UL Listed
- Department:
- Electrical
- Product Subgroup:
- Box Covers
- Product Group:
- Boxes & Enclosures
RACO 868AMR – Frequently Asked Questions
1) What does the "adjustable" part of the 868AMR mud ring actually do on the job?
The depth is field-adjustable, so you set how far the device opening stands off the box after the wall material goes on. One ring covers thin drywall through thicker plaster or tile buildups, instead of stocking fixed-depth rings in 1/4, 1/2, 5/8 and deeper. That matters most when the boxes were roughed in before the finish was decided, or when tile goes over drywall in a wet wall.
2) How many devices does the RACO 868AMR hold?
One. It is a single-device ring, so it accepts one switch, receptacle or dimmer. For two devices in a 4-11/16 square box you need a two-gang ring instead; this one cannot be ganged.
3) What is the difference between the RACO 868AMR mud ring and the Allied Moulded 9345 plaster ring?
The RACO 868AMR is a 4-11/16 in. square adjustable mud ring that mounts a single device flush with the finished wall when paired with a 4-11/16 in. square box, and it is UL Listed. The Allied Moulded 9345 is a PVC 1-gang raised plaster ring from the FiberglassBox series. Both serve a single device, but the 868AMR is sized to the larger 4-11/16 in. square box footprint with field-adjustable depth, while the 9345 is a PVC ring built to pair with Allied Moulded's fiberglass box line.
4) Is the 868AMR mud ring UL Listed for commercial work?
Yes, the 868AMR carries a UL Listing, which is what most commercial specs and inspectors look for on device covers in both commercial and residential wiring.
5) Do I need a plaster ring if the box is already flush with the drywall?
No. A mud ring like the 868AMR exists to bridge from a recessed box out to the finished wall surface so the device yoke lands flush. If the box face is already at the finish plane, you mount the device to the box and use a flat cover plate. Rings are for boxes set before the wall material went up.
6) Can I use the 868AMR mud ring behind tile?
Yes, that is one of the cases the adjustable depth handles. Tile over backer adds thickness a fixed 1/2 inch ring often cannot reach, and the 868AMR lets you dial the device opening out to the tile face so the plate sits tight. The listed wall assemblies include drywall, plaster and tile.
7) Does a fixed raised plaster ring do the same job as the RACO 868AMR?
Both bridge the gap between a recessed box and the finished wall so a single device trims out flush. The difference is depth setting: the 868AMR is adjustable, so an electrician dials in the device depth on the jobsite for drywall, plaster, or tile thicknesses without swapping parts. A fixed raised ring such as the Allied Moulded 9345 1-gang plaster ring is set at its built-in depth, so the wall buildup has to match the ring you pick.
8) Which RACO mud ring part number should I order for a single switch in a 4-11/16 square box?
Order RACO 868AMR. That is the manufacturer part number for the 4-11/16 in. square single-device adjustable ring, and it is the only configuration offered under it.
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Does the RACO 868AMR come with a warranty?
Absolutely. The RACO 868AMR is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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