Crouse-Hinds 4" Steel Square O...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$2.80
Eaton Crouse-Hinds Mud Rings for 4" Steel Square Outlet Boxes, UL-Listed - One Device

Crouse-Hinds 4" Steel Square Outlet Box Mud Ring - Single Device Configuration

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Model: TP488

In Stock (leaves warehouse same day if ordered before 3pm ET)

$2.80
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Crouse-Hinds 4" Steel Square Outlet Box Mud Ring - Single Device Configuration

Professional electrical box extension for single device installations

The Crouse-Hinds 4" Steel Square Outlet Box Mud Ring provides reliable extension and mounting solutions for electrical installations in ordinary locations. This UL-Listed steel construction mud ring is specifically designed for 4" square outlet boxes with single device configuration, delivering the trusted quality and durability that professionals expect from Crouse-Hinds electrical components.

Professional Features & Benefits

  • 4" Square Box Compatibility: Precisely engineered dimensions ensure proper fit and secure mounting for standard 4" square electrical boxes.
  • Steel Construction: Durable steel material provides long-lasting performance and resistance to mechanical stress in electrical installations.
  • Single Device Configuration: Optimized design accommodates one device installation with proper spacing and accessibility for wiring connections.
  • UL-Listed Certification: Meets rigorous safety and performance standards for reliable operation in electrical systems.
  • NEC/CEC Compliance: Manufactured to meet National Electrical Code and Canadian Electrical Code requirements for professional installations.
  • Ordinary Location Rating: Suitable for standard non-hazardous electrical environments in residential and commercial applications.

Technical Specifications

  • Area Classification: Ordinary/Non-Hazardous Locations
  • Box Size: 4"
  • Product Length Depth: 4 in
  • Product Material: Steel
  • Product Width: 4 in
  • Special Features: One device
  • Standards Type: NEC/CEC

Professional Applications

  • Residential electrical installations requiring box extension
  • Commercial building electrical systems
  • Office and retail electrical infrastructure
  • Light industrial electrical applications
  • Professional electrical contractor projects
  • Electrical system upgrades and modifications

Why Choose Crouse-Hinds Quality?

Crouse-Hinds delivers proven reliability through UL-Listed certification and NEC/CEC compliance standards. The steel construction ensures long-term durability in demanding electrical environments, while the precision engineering provides consistent performance for professional electrical installations.

Manufacturer Resources

Product Specs

Area Classification:
Ordinary/Non-Hazardous Locations
Box Size:
4"
Product Length Depth:
4 in
Product Material:
Steel
Product Width:
4 in
Special Features:
One device
Standards Type:
NEC/CEC
Department:
Electrical
Product Type:
Mud Ring

Crouse-Hinds TP488 – Frequently Asked Questions

1) What is a mud ring for a 4 inch square box and why do I need one?
A mud ring, also called a plaster ring or device cover, closes off a 4 inch square outlet box and reduces the opening down to a single device opening for a switch or receptacle. Without one you have no way to mount the device or fit a standard device plate to a 4 inch square box. The Crouse-Hinds ring is steel, sized for 4 inch square boxes, and is a one-device configuration.
2) How do I pick the right raise height on a Crouse-Hinds mud ring?
Match the raise to your finished wall thickness. The steel ring comes flat (TP480) plus 1/4 inch (TP482), 1/2 inch (TP484), 5/8 inch (TP489), 3/4 inch (TP486), 1 inch (TP488), and 1-1/4 inch (TP490) raised. The raise carries the device opening out from the box face to the finished surface, so a box set behind 5/8 inch drywall takes the 5/8 inch raise, 1/2 inch board takes the 1/2 inch, and a flat ring is for a box already flush with the finish. Getting this wrong is what leaves a device recessed behind the wall or standing proud of the plate.
3) Will a Crouse-Hinds TP480 mud ring fit a 4-11/16 inch box?
No. These rings are sized for 4 inch square boxes, 4 in by 4 in. A 4-11/16 box (the one trade calls a 4 square oversize or 119 box) is a larger footprint and takes its own ring; the mounting ears will not line up. Check the box stamp before ordering.
4) Do these mud rings meet code for commercial electrical work?
The rings are UL-Listed and built to NEC/CEC standards, which is what an inspector looks for on a commercial or institutional job in the US or Canada. Steel construction, ordinary-location rated.
5) Should I use a steel mud ring or a plastic one on a 4 square box?
Steel is the choice for metal box systems and commercial raceway work: it grounds through to the box, it takes the mechanical abuse of a wall that is going to get bumped, and it is what specs on commercial drawings normally call for. Plastic rings pair with nonmetallic boxes on residential work. These Crouse-Hinds rings are steel and made for 4 inch steel square outlet boxes.
6) My box is set too deep behind the finished wall. Does a raised mud ring fix it or do I need an extension ring?
A raised mud ring corrects up to 1-1/4 inches of setback, which is what TP490 gives you; below that, TP488 at 1 inch and TP486 at 3/4 inch handle most furring and double-layer board. If the box is buried deeper than 1-1/4 inches, the ring will not reach and you need a box extension instead. A mud ring is a device cover with a raise, not a way to gain box volume.
7) Does a flat mud ring work if my 4 square box is already flush with the drywall?
Yes, that is exactly what the flat ring TP480 is for. Surface-mounted boxes and boxes set flush to the finish take the flat version, since there is no wall thickness to make up. Steel, single device, for 4 inch square boxes.
How fast can I get the Crouse-Hinds TP488 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Crouse-Hinds TP488 come with a warranty?
Absolutely. The Crouse-Hinds TP488 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Crouse-Hinds TP488?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Crouse-Hinds TP488 from ZenSupply?
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