Best Surface Mount Floor Boxes and Back Boxes for Electrical Installations
Need a practical solution for adding outlets, data ports, or low-voltage connections to a concrete floor or a wall surface? This guide covers top surface-mount floor boxes and back boxes that are easy to install and compatible with common raceways. It helps identify the right option for concrete floors, walls, cabinets, or workbenches. The selections focus on 1-gang and round floor boxes, low-voltage back boxes, and ready-to-install kits for quick, safe electrical access. Useful for contractors, DIY enthusiasts, and remodel projects where in-wall boxes aren’t feasible.
| Product | Best For | Why It Stands Out |
|---|---|---|
| Leviton Surface Mount Backbox, 1-Gang White | Drywall or cabinet edges | Affordable single-gang back box with surface-mount design and compatibility with raceway systems |
| Leviton Surface Mount Backbox, 1-Gang Black | Concealed or modern aesthetics | Same utility as white version with a dark finish to blend with fixtures |
| Arlington FLBC4580 Recessed Power and Data Round Floor Box (Brass) | Concrete floors needing recessed receptacle looks | Brass finish, economical for concrete floor installations, includes power receptacle |
| Arlington FLBR5420 Recessed Power and Data Round Floor Box (Black) | Low-profile round floor box needs | Black finish, multiple cover options, 5″ hole saw installation |
| RACO 6239BK Floor Kit with Recessed Duplex 15A TR Device | Professional-grade floor installation | Adjustable steel box, back/side knockouts, versatile for power or data |
Leviton White Surface Mount Backbox, 1-Gang
Product features: Surface Mount Housings and Back Boxes work where wall boxes aren’t practical; breakouts align with common surface mount raceway systems; box depth is 1.89 inches. Best for flat walls or cabinets where a simple, clean surface mount is required. This option is suited for electrical contractors and DIYers installing under counters or along baseboards.
- Best for budget-conscious projects needing a simple surface-mount option
- Limitations: Not a floor box—intended for surface mounting on walls or cabinets
Leviton Black Surface Mount Backbox, 1-Gang
Product features: Surface Mount Back Box 1-Gang 1.89in D; designed for practical surface mounting with raceway compatibility. Suitable for rooms requiring discreet, single-gang outlets or data locations on non-wall surfaces.
- Best for quick upgrades on finished surfaces
- Limitation: May not cover irregular wall contours as effectively as specialty boxes
Arlington FLBC4580 Recessed Floor Box (Brass)
Product features: For concrete only; economical solution with brass finish; includes 15 amp Decora-style power outlet. Best for existing or new concrete floors needing a recessed, clean look. Multiple finish options match interior décor.
- Best for concrete floor installations that require a recessed appearance
- Limitation: Not suited for wood or drywall floors without adaptation
Arlington FLBR5420 Recessed Floor Box (Black)
Product features: 6 cover color options; accommodates recessed power and low voltage; installs with a 5″ hole saw. Best for custom floorbox installations where color matching and hidden wiring are priorities.
- Best for precise aesthetic matching in finished floors
- Limitation: Requires a 5″ hole saw and floor-cutting tools
RACO 6239BK Floor Kit with Recessed Duplex 15A TR Device
Product features: Professional installation recommended; includes reinforced steel box with back and side knockouts; recessed duplex 15A TR device; tamper-resistant 5A, 125V receptacle suitable for power or data. Designed for reliable, high-capacity floor installations.
- Best for professional projects needing robust floor boxes
- Limitation: More complex installation than basic surface-mount options
Buying Guide
What’s the difference between surface-mount back boxes and floor boxes?
Surface-mount back boxes attach to walls or cabinets, providing outlets or data ports without cutting into the surface. Floor boxes are designed to recess into a floor opening and are ideal for rooms where outlets are needed on the floor, such as conference spaces or work areas. Choose based on where the outlets must be located and how visible you want the installation to be.
Key installation considerations
- Surface vs. recessed: Surface-mount is easier but more visible; floor boxes require cutting and a proper floor opening.
- Material and finish: Match to décor (brass, black, white) and ensure compatibility with electrical standards.
- Box depth and capacity: Ensure the box depth accommodates wiring and devices without crowding.
- Knockouts and routing: Check for back/side knockouts and plan routing for power and data cables.
Choosing the right finish and style
- White or black back boxes blend with most walls; brass or black floor boxes provide a deliberate aesthetic choice for concrete floors.
- Round floor boxes offer a compact footprint; square back boxes are commonly used for wall-mounted outlets.
Installation environment considerations
- Concrete floors require proper hole saws and dust containment; ensure compatibility with moisture exposure.
- Indoor use only guidelines apply; outdoor or damp locations require weather-rated boxes.
Frequently asked questions
- What is a surface mount back box used for? It provides a mounting cavity on a surface to house outlets or data ports when wall boxes aren’t feasible.
- Can I use a floor box in a wooden floor? Floor boxes are typically designed for concrete floors; using them in wood requires an appropriate cutout and frame, or alternative floor box designed for wood substrates.
- Do these boxes require professional installation? Some installations are straightforward for DIY, while others, especially recessed floor boxes, benefit from professional installation and adherence to electrical codes.
- Are there options with both power and data? Yes, some floor boxes and kits accommodate power outlets and data/low-voltage ports in a single unit.
- What finishes are available? Finishes include white, black, and brass; select a finish that matches surrounding fixtures for a cohesive look.