Best Floor Boxes for Concrete: Durable in-Floor Power Solutions
Choosing a floor box for concrete floors ensures electrical and data outlets are conveniently accessible without cluttering your surface space. The following selections represent five reliable options designed for slab-on-grade installations, new concrete pours, or existing floors. Each product prioritizes durability, ease of installation, and compatibility with common modern outlets and data modules. Use this guide to compare features, installation methods, and long-term performance for in-floor power and connectivity on concrete surfaces.
Product Snapshot
| Product | Brand | Type | |
|---|---|---|---|
| Leviton 2-Gang Concrete Floor Box System | Leviton | PVC Box System | 2-Gang, 6.25″ height, requires FBLEV-GY and finished floor plate |
| ARLINGTON FLBC4500 | ARLINGTON | Plastic Floor Box | Low voltage divider, mud cover, for new concrete |
| Bryant Electric RF400 | Bryant Electric | PVC Box Only | Slab-on-grade, quick leveling system, recessed receptacle |
| Hubbell S1PFB | Hubbell Wiring Systems | Non-corrosive Plastic System One | 100 cubic inches, universal cover mounts to riser |
| Lew Electric FBKIT | Lew Electric | PVC Floor Box Kit | Round 5″ box, 4.5″ inner diameter, concrete-ready |
Leviton 2-Gang Concrete Floor Box System
The Leviton floor box system is designed for two-gang installations with a robust PVC box and a high clearance profile. This package often requires adding the FBLEV-GY finishing floor plate to create a clean, flush surface. It supports both power and data conduit reducers, enabling flexible in-floor wiring for home theaters, offices, or conference spaces. The 6.25″ height ensures compatibility with standard subfloor profiles while maintaining a neat appearance after installation.
ARLINGTON FLBC4500 Concrete Floor Box
ARLINGTON’s FLBC4500 option emphasizes a low-voltage divider and mud cover, making it suitable for new concrete pours where a clean separation of power and data is desired. Constructed from plastic, this option prioritizes lightweight handling and straightforward installation. It is designed specifically for new concrete installations, delivering an economical, practical solution for in-floor outlets in residential or light commercial projects.
Bryant Electric RF400 PVC Floor Box
The Bryant Electric RF400 focuses on slab-on-grade installations with a push-in leveling system for quick alignment. It features a recessed receptacle to minimize plug protrusion, enabling furniture to sit flush over the outlet. The pre-assembled flange, cover, and leveling ring streamline installation, reducing field assembly steps and potential misalignment on concrete surfaces.
Hubbell S1PFB Non-Corrosive SystemOne
The Hubbell S1PFB SystemOne is a non-corrosive plastic floor box with a 100 cubic inch capacity. It is touted for being economical and easy to install, with an in-floor delivery system suitable for open-plan spaces. Its universal cover mounts directly to the floor box riser, eliminating the need for an extra adapter collar and offering a streamlined finish for modern interiors.
Lew Electric FBKIT – Round PVC Floor Box
Lew Electric’s FBKIT is a round PVC floor box with an outside diameter of 5″ and an inside diameter of 4.5″, designed for concrete floors. This kit is a practical choice for those needing a compact, round box with standard dimensions that fit common concrete pour patterns and easy-to-integrate lids or covers. It emphasizes straightforward installation in new or existing concrete slabs.
Buying Guide
Key considerations when selecting a concrete floor box include compatibility with your outlet needs, installation environment, and ongoing maintenance. Here are multiple perspectives to help you decide:
- Box material and durability: PVC and plastic boxes are lightweight and corrosion-resistant, while some models offer enhanced moisture sealing or metal finishes for long-term wear in high-traffic areas.
- Number of gangs and outlets: Decide between single, two-gang, or larger configurations based on whether you need multiple outlets or a combination of power and data lines in one location.
- Installation depth and pour readiness: For new concrete pours, select boxes with mud covers and low-profile flanges to simplify embedding. For existing slabs, ensure the box tolerates drilling and embedding without compromising structural integrity.
- Recessed vs surface finish: Recessed receptacles minimize plug protrusion, enabling furniture to sit flush, especially in living spaces and conference rooms.
- Cover options and aesthetics: Finishes like brass, nickel, or brushed options influence how well the box integrates with flooring materials and room design.
- Connection versatility: Look for boxes that support both power and data conduits, with compatible reducers and adapters to future-proof installations.
- Maintenance and replacement: Consider ease of access for adding or replacing outlets, as well as availability of replacement covers and lids in your preferred finish.
- Cost vs. longevity: While plastic boxes are economical, premium finishes and more durable models may offer better long-term value in high-traffic or commercial settings.
For concrete-floor applications, evaluate whether you need a ready-to-embed kit with all mounting hardware or a modular system that allows future expansion. Always follow local electrical codes and, if required, engage a licensed electrician to ensure safe installation and compliance with building regulations.