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RFBA Four-Inch Small Round Extension Ring

RFBA24C4EXT Wiremold
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Your go-to floor box just got better. Resource RFB Series Floor Boxes are designed for maximum efficiency throughout an entire building, bringing versatile recessed activations for power and data services to open space areas or directly to workstations. No matter what size you choose, components and accessories work across the entire line interchangeably. Simply mix-and-match as needed for your project. Improved wire and cable routing makes wire pulling much easier in adjacent compartments and around corners. Available in 2-, 4-, 6- and 10-gang models with a variety of covers, colors and profiles.* Installs in tile, stone, carpet, terrazzo, wood and polished concrete. Perfect for many applications, including schools, financial institutions, commercial office buildings, hospitality and residential.

Shape Circular
Size Small
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  • Allows for deeper pours
  • High visibility yellow
  • Height adjustment up to 4 inches


General Info
Product Line Wiremold
Color Yellow
UPC Number 786564105541
Country Of Origin United States
Application Sector Commercial
Standard cULus Listed Metallic Outlet Boxes: File E2961 Guide QCIT Meets Article 314.27(C) of NEC.
Type Floor Box
Product Width US 7.25 in
Product Weight US 0.92 lb
Product Height US 4.625 in
Product Length US 7.5 in
Additional Information
RoHS Conformant Yes This product meets the material restrictions of Article 4 of the RoHS Directive (2011/65/EU), including Commission Delegated Directive 2015/863.
Product Has Potential to Contribute to LEED Yes This product contributes to earning credits in the LEED rating system. Visit our LEED with Legrand webpage for more information.
Listing Agencies / 3rd Party Agencies
cULus ListingNumber  QCIT
cULus Listed  Yes
Buy American Act Compliance
Technical Information
Indoor/Outdoor Indoor


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Questions & Answers

How does the cover (6CTC2BK) attached to the RFBA24C4EXT?

Asked by: Mike
Hi, The RFBA24C4EXT will come with 2 long screws that will be used to attach the cover to the box. Once the concrete is poured, the extension is cut to the level of the concrete, a floor covering is installed, and then the cover will be secured to the box using the screws that came with the extension. Thanks,
Answered by: Wiremold Tech Support
Date published: 2023-09-19

On he RFBA4 how hard is it to pull wire after is installed?

Asked by: Carlos Ornelas
Hello, Adding and changing device plates within the box is very easy to do after installation. Pulling wire through the box to adjacent compartments gets easier with the larger boxes as there is more space to work with. Below is a link to a video that will give you an idea of how it works. https://www.youtube.com/watch?v=MlZM6sLTrD0 Thank you
Answered by: Wiremold Tech Support
Date published: 2022-09-16
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