Best Floor Outlet Box for Concrete: Top Picks for Power and Data
Looking for a reliable floor outlet box for concrete floors? This guide highlights five top options that balance durability, ease of installation, and versatile ports for power and data. Best for new construction projects, renovations, or retrofitting existing concrete spaces, these boxes help keep outlets accessible while staying integrated with the floor. The selections below are organized to help you compare by installation type, finish, and compatibility with common ceiling data or power needs.
Buyer’s quick reference table
| Product | Brand | Best For | Notes |
|---|---|---|---|
| Leviton FBBOX-GY System | Leviton | New concrete floors needing modular box + plates | Requires FBLEV-GY and a finished floor plate |
| ARLINGTON FLBC4500 | ARLINGTON | New concrete with mud cover | Plastic construction, low voltage divider |
| ARLINGTON FLBC4580 Round | ARLINGTON | Existing or new concrete, recessed round | Brass or Nickel cover options |
| RACO 6239BK Floor Kit | RACO | Recessed duplex, versatile wiring | Professional installation recommended |
| Lew Electric FBKIT Round PVC | Lew Electric | Round PVC concrete floor box kit | Includes LRA-U adapter ring |
Leviton 2-Gang Concrete Floor Box System
This 2-Gang PVC concrete floor box is designed for modular power and data needs in new installations. It requires FBLEV-GY and a Leviton finished floor plate (sold separately) to complete the setup. Best for projects that plan to expand outlets or swap plates as needs evolve.
Who it’s best for: contractors or property owners planning future upgrades or custom floor finishing. Why selected: the modular approach supports changing configurations without replacing the entire box. Caution: this set relies on separate components (FBLEV-GY and floor plate) to function fully.
ARLINGTON FLBC4500 Concrete Floor Box
ARLINGTON’s FLBC4500 is a new-concrete solution with a mud cover and a low-voltage divider. It’s made of plastic and is intended for straightforward installation into fresh concrete floors. It accommodates practical data and power needs with a clean finish.
Who it’s best for: projects prioritizing a simple, cost-effective install in new concrete. Why selected: mud cover helps conceal wiring and maintain a neat floor surface. Caution: plastic construction may be less rugged over time in high-traffic areas.
ARLINGTON FLBC4580 Recessed Round Floor Box (Nickel)
This recessed round floor box is designed for concrete installations, available with a nickel cover. It’s suitable for both new and existing concrete floors and supports a 15-amp Decora style power outlet. Best for: round floor layouts with a clean, modern look.
Why selected: round boxes offer a natural aesthetic for circular spaces or footprints. Caution: kit focuses on concrete only; verify box compatibility with your floor structure.
ARLINGTON FLBC4580 Brass Round Floor Box
This brass/brass-plated option provides a durable, classic finish for recessed floor outlets. It fits existing or new concrete boxes and includes a 15-amp Decora style outlet. Best for: spaces seeking a premium metallic finish to match decor. Caution: Brass finish variants may require care to maintain appearance over time.
RACO 6239BK Floor Kit
The RACO 6239BK kit combines a recessed duplex 15A TR device with an adjustable steel box in a black finish. It supports power and data and includes a tamper-resistant receptacle. Best for: spaces where safety, concealment, and flexibility matter. Caution: professional installation recommended due to wiring access and code requirements.
Lew Electric FBKIT Round PVC Concrete Box
The Lew Electric FBKIT offers a 5-inch round PVC concrete floor box with an outside diameter designed for standard concrete floors. It’s a straightforward kit for round installations and pairs well with compatible adapters like LRA-U. Best for: projects needing a simple, round PVC solution. Caution: ensure correct adapter compatibility for a complete setup.
ENERLITES Dual Flip Lid Floor Box Cover
This 5.625″ diameter flip-lid cover with a 20A tamper/weather-resistant receptacle is designed to pair with specific box models and offers two gaskets for weather sealing. Best for: areas requiring weather resistance and a secure lid. Caution: verify box compatibility to ensure a proper fit and seal.
Buying guide: key considerations for concrete floor boxes
- Installation type: Choose between new-construction boxes for fresh pours or retrofits for existing slabs. Round versus rectangular profiles affect layout and aesthetic.
- Finish and cover options: Nickel, brass, or black finishes impact appearance and maintenance. Consider weather resistance if used in exposed or high-traffic areas.
- Portability vs. permanence: Some kits rely on adapters or plates that allow later changes; others are more integrated. Plan for potential future upgrades.
- Electrical and data compatibility: Ensure the chosen box supports 15A outlets and data/data-ready ports as needed. Look for back/side knockouts for wiring flexibility.
- Code and safety: Professional installation is often recommended for compliance with local electrical codes and safety standards, especially in commercial settings.
Frequently asked questions
- What is a floor box used for in concrete floors?
It provides a recessed, accessible outlet or data port in a concrete floor for power distribution or connectivity.
- Should I choose a round or rectangular floor box?
Round boxes suit circular layouts and may blend with design features; rectangular boxes fit linear space and multiple outlets more easily.
- Is professional installation necessary?
Many installations require following electrical codes; professional installation is often recommended for safety and compliance.
- Can floor boxes support data outlets in addition to power?
Yes, many kits are designed to accommodate mixed use, including data and power via integrated or modular configurations.
- What maintenance considerations exist for floor boxes?
Check weather sealing, dust control, and cover integrity to ensure long-term performance in various environments.