Pass & Seymour C118 3.75-in Ro...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$10.46
Pass & Seymour C118 3.75-in Round Old Work Electrical Box, Thermoplastic

Pass & Seymour C118 3.75-in Round Old Work Electrical Box, Thermoplastic

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Model: C118WGAC

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

$10.46
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Pass & Seymour C118WGAC 3.75-in Round Old Work Box, Black Thermoplastic

The Pass & Seymour C118WGAC is a 3.75-in round old work box built from high-impact thermoplastic for retrofit device and fixture installations. This UL Listed box is suitable for in-wall and in-ceiling use, supporting weights of up to 6 lbs. when mounted overhead, and its swing-out wing bracket design lets installers work with wallboard from 1 1/4 inch thick down to 1/8 inch thick paneling without cutting into new construction.

Key Features

  • Trade Size: 3.75-in round old work box sized for standard retrofit device and fixture openings.
  • Durable Construction: Molded from high-impact thermoplastic for a rugged, long-lasting enclosure in black.
  • Weight Rating: Suitable for in-ceiling use, supporting weights of up to 6 lbs.
  • Extended-Reach Brackets: New longer swing brackets have greater reach to clamp securely onto oversize cutouts.
  • Wall Thickness Range: Swing-out wing brackets permit installation in wallboard from 1 1/4 inch thick down to 1/8 inch thick paneling.
  • Flush-Fit Design: Box is designed so the device mounting strap, with plaster ears removed, sits flush, allowing use of a standard depth wallplate without an unsightly gap.
  • Auto/Clamp Feature: Includes the exclusive Auto/Clamp feature plus combination slotted/Phillips head swing bracket screws for fast installation.
  • Device Mounting Holes: Pre-formed device mounting holes simplify device attachment in the field.

Certifications & Compliance

  • UL Listed

Technical Specifications

  • Country Of Origin: United States
  • Product Color: Black
  • Product Line: Pass & Seymour

Typical Applications

  • Retrofit and Old Work Electrical Installations
  • Ceiling-Mounted Fixture and Device Support
  • Residential and Commercial Wall Device Boxes
  • Renovation Projects Requiring Non-New-Construction Boxes

Why Pass & Seymour?

Pass & Seymour engineers this old work box with UL Listed, high-impact thermoplastic construction and an Auto/Clamp swing bracket system built for reliable, code-compliant retrofit installations. The extended-reach brackets and flush-fit device strap design help electrical professionals deliver a clean, secure finish without cutting oversize openings.

Product Specs

Product Material:
Thermoplastic
Listing:
UL Listed
Department:
Electrical
Country of Origin:
United States
Product Group:
Boxes & Enclosures
Product Type:
Ceiling Box
Product Subgroup:
Electrical Boxes

Pass & Seymour C118WGAC – Frequently Asked Questions

1) My drywall cutout came out oversize. Will this old work box still clamp?
That is what the longer swing brackets are for. The C118 uses extended-reach swing brackets specifically to clamp onto oversize cutouts, so a hole that opened up bigger than intended can often still be saved without patching. Combination slotted/Phillips bracket screws mean you can drive them with whatever is already in your hand.
2) Is this a new construction box or a remodel box?
It is an old work box, meant to go into finished walls and ceilings. There are no nail-on brackets for framing; it holds itself in place by clamping the wallboard between the box flange and the swing-out wing brackets, so you cut a round opening in existing drywall and set it from the face side. For new construction with studs exposed, use a nail-on or bracket-mount box instead.
3) Will a standard depth wallplate sit flush on the Pass & Seymour C118, or will there be a gap?
Flush, provided you break off the plaster ears on the device strap. The box is molded so the device mounting strap with the ears removed sits level with the wall surface, which lets you use a standard depth wallplate instead of a deep or oversize plate to hide a gap.
4) What is the difference between the C118WGAC and the C1-18-WAC?
Same 3.75-in round old work box, different color option. C118WGAC is the black thermoplastic version; C1-18-WAC is the standard color. Construction, the swing bracket system, and the UL Listing are the same, so pick on whichever finish disappears behind your trim or fixture canopy.
5) Is the Pass & Seymour C118 metal or plastic, and is it UL Listed for commercial work?
High-impact thermoplastic, not metal, and it is UL Listed. A nonmetallic box means no separate bonding of the enclosure itself, though your equipment grounding conductor still has to terminate at the device. It is made in the United States and used in both residential and commercial device and fixture retrofits.
6) Do I need to drill for the device screws, or are mounting holes already there?
Pre-formed device mounting holes are molded into the box, so a switch, receptacle, or fixture strap screws straight in with no field drilling. Combined with the Auto/Clamp bracket feature, it is a one-hand set in most openings.
How fast can I get the Pass & Seymour C118WGAC 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 Pass & Seymour C118WGAC come with a warranty?
Absolutely. The Pass & Seymour C118WGAC 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 Pass & Seymour C118WGAC?
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 Pass & Seymour C118WGAC from ZenSupply?
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