Round Concrete Floor Box, Recessed Power and Data, Matte Black
| Q&A$109.00
Free shipping on orders over $99
Lew Electric RRFB-MB-FB Round Matte Black Recessed Plug Floor Box
A professional-grade recessed plug floor box at an affordable price is designed to deliver power cleanly and safely in concrete floors while maintaining a low-profile finish. Built for both residential and commercial installations, this floor box keeps plugs recessed below the floor surface to reduce trip hazards and protect cords in high-traffic spaces.
Designed for Concrete Floors
This versatile floor box works in both new construction and retrofit projects.
Concrete floor installation
• Includes Lew Electric FB series floor box
• Includes Lew Electric RRFB-LRA leveling ring assembly for proper concrete height adjustment
Recessed Plug Design for Safer Floors
Unlike standard floor outlets, the RRFB keeps plugs recessed below the cover surface. You can use the single flip lid for access, or use one or both of the screw plugs for permanently plugged-in items. Included are rubber grommets to go in the screw plug holes to keep the cords safe, a rug can even be put over the box to completely hide the box if desired.
Recessed plug floor boxes provide:
• Reduced trip hazards
• Protection for cords and plugs
• Clean, flush appearance in finished floors
• Ideal solution for open living spaces and commercial environments
Perfect for basements, offices, conference rooms, retail spaces, and hospitality settings.
Matte Black Cover
The durable metal matte black cover delivers a premium look while standing up to daily foot traffic and corrosion.
• Flush, low-profile design
• Single flip hinged lid access, or
• Dual screw plugs with rubber grommets for cord protection
• Blends with carpet, tile, or any decorative flooring
• Built for long-term durability in high-use areas
Includes Power and 2 Keystone Openings
Inside the box you will find a matching black 15A duplex receptacle and 2 keystone openings, use the keystone openings to add in your own connections. The box has a built-in divider to separate out the power and low voltage to stay code-compliant.
• Looking for Cat6 data jacks? CLICK HERE
ETL Listed & Code Compliant
The RRFB is certified for installation in the United States and Canada.
Certifications & Compliance
• ETL Listed (Intertek) – US & Canada
• ETL File #: 4004534
• Conforms to UL 498
• Conforms to CSA C22.2 No. 42
• UL Listed receptacle – File E309821
Designed to meet electrical safety requirements for residential and commercial applications.
Ideal Applications
• Living rooms & family rooms
• Offices & conference rooms
• Retail & hospitality spaces
• Hotel lobbies & meeting areas
• Anywhere power is needed in open floor spaces
Easy Installation with Adjustability
• Secure FB to the ground
• Pour concrete around box
• Connect your cabling to the outlet
• Install the inner box
• Cut inner box to ground level
• Rotate the screws to align the upper surface making the bottom box flush with the adjustment plate
Specifications:
- Cover: Metal matte black
- Installs in concrete with included FB box
- Single hinged lid or
- (2) 1.25" screw plugs for access with rubber grommets
- Outlet: 1 duplex 15A tamper-proof
- 2 keystone openings, buy data jacks HERE
- Built-in divider in box
- Connect low in the box to hide your plugs
- ETL listed # 4004534
- UL listed outlet# E309821
- Conforms to CSA C22.2 No. 42 for Canada
- Includes plate screws
- Cover size: 5.75"
- Back box size: 4.52"round, 5.95" deep
- Cover thickness: .2188"
- Minimum height: 3.15"
- Warranty: 1 year
Box Diagram (PDF)
Cover Diagram (PDF)
Concrete Installation Instructions (PDF)
- Cover: Metal matte black
- Installs in concrete with included FB box
- Single hinged lid or
- (2) 1.25" screw plugs for access with rubber grommets
- Outlet: 1 duplex 15A tamper-proof
- 2 keystone openings
- Built-in divider in box
- Connect low in the box to hide your plugs
- ETL listed # 4004534
- UL listed outlet# E309821
- Conforms to CSA C22.2 No. 42 for Canada
- Includes plate screws
- Cover size: 5.75"
- Back box size: 4.52"round, 5.95" deep
- Cover thickness: .2188"
- Minimum height: 3.15"
- Warranty: 1 year
Questions & Answers
Have a Question?
Be the first to ask a question about this.






