31/4 DP.VERT. WHILE IN USE
Manufacturer Resources
Spec Sheet
Product Specs
- Idea Granular Category Code Igcc:
- 4425 >> Electrical box covers
- Number Of Knockouts:
- 0
- Product Group:
- Wiring Devices
- Product Type:
- While-In-Use Cover
- Selling Unit Of Measure:
- each
- Standards:
- UL E28688
- Surface Finishing:
- Powder-coated
- Department:
- Electrical
- Product Subgroup:
- Weatherproof Covers
- Product Color:
- Silver
- Product Material:
- Aluminum Die Cast
Thomas & Betts CKMUV – Frequently Asked Questions
1) What is the Thomas & Betts CKMUV cover made of, and will it hold up outdoors?
The CKMUV is a die cast aluminum while-in-use cover with a powder-coated finish in silver. Metal construction rather than plastic, so it suits exposed exterior walls, equipment yards, and other locations where a cover takes abuse.
2) What is the closest alternative to the Thomas & Betts CKMUV while-in-use cover for a single-gang outdoor receptacle?
The TAYMAC MM420 is a 1-gang weatherproof in-use cover from the EXTRA DUTY Series, which covers the same single-gang outdoor receptacle application as the CKMUV while-in-use cover. The main difference to weigh is construction and appearance: the CKMUV is die cast aluminum with a powder-coated silver finish, so if you are matching existing metallic covers on a building exterior, the CKMUV stays consistent with that look.
3) I need a while-in-use cover for a two-gang outdoor box - will the CKMUV work?
No. The Thomas & Betts CKMUV is a single-gang while-in-use cover and will not span a two-gang box. For a two-gang opening, use the TAYMAC ML2500G, an Outdoor Comforts EXTRA DUTY 2-Gang weatherproof in-use cover in gray. Confirm the gang count on the box before ordering, since a while-in-use cover must match the box footprint exactly.
4) Does the Thomas & Betts CKMUV have knockouts for conduit entry?
No knockouts. The CKMUV is a plain while-in-use cover with zero knockouts, so all conduit entries have to be made in the box behind it.
5) For an institutional exterior where the inspector wants an extra duty cover, is the CKMUV or the TAYMAC the right call?
If the drawing or inspector specifically calls for an extra duty rated while-in-use cover, the TAYMAC MM420 or the 2-gang TAYMAC ML2500G are the EXTRA DUTY Series items and are the cleaner answer to that line on the spec. The Thomas & Betts CKMUV is a die cast aluminum while-in-use cover carrying UL file E28688, which is the one to standardize on when the requirement is a metal cover rather than a named extra duty series.
6) Is a standard flip-lid weatherproof receptacle cover a substitute for the CKMUV?
No. A plain flip-lid cover seals only when nothing is plugged in, while the Thomas & Betts CKMUV is a while-in-use cover, meaning the lid closes over a cord that stays connected. If you need that function in a different gang size or a non-metallic version, the comparable while-in-use covers are the 1-gang TAYMAC MM420 and the 2-gang TAYMAC ML2500G. A flip-lid cover is not an equivalent for either.
7) We are standardizing outdoor receptacle covers across a property - does the CKMUV or the TAYMAC line give better finish matching?
It depends on what is already on the buildings. The Thomas & Betts CKMUV is silver with a powder-coated finish over die cast aluminum, which blends with metallic conduit and cast device bodies. The TAYMAC ML2500G is gray, so if the existing covers across the property read gray, the TAYMAC family keeps the fleet uniform and offers both 1-gang (MM420) and 2-gang (ML2500G) sizes under one look.
8) How many does the CKMUV come per order?
The CKMUV is sold each, not in a multi-pack, so order one per opening you are covering.
9) Where do I find the manufacturer spec sheet for the Thomas & Betts CKMUV?
Thomas & Betts publishes a PDF spec sheet for the CKMUV at https://media.distributordatasolutions.com/ThomasAndBetts/2018q3/108de0ab4effc560a32b6d3255a0f79a14d99fdf.pdf. Useful if you need submittal paperwork for a government or institutional job.
How fast can I get the Thomas & Betts CKMUV delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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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 Thomas & Betts CKMUV come with a warranty?
Absolutely. The Thomas & Betts CKMUV 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 Thomas & Betts CKMUV?
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