Best Raised Floor Electrical Boxes: Durable Solutions for Computer Floors and More
Raised floor electrical boxes are essential for clean, accessible power and data distribution in data centers, office computer floors, and other modular spaces. This article highlights top options designed for raised floor installations, including UL-listed models, weather-resistant designs, and easy-install variants. Explore five carefully chosen products with practical features to help you compare constructions, mounting styles, and safety considerations.
Summary of Selected Products: Access Floor Systems In-floor Electrical Box with Cover — Large; Access Floor Systems Compact Electrical Box with Cover; ENERLITES Screw Cap Cover Floor Box kits (Brass and Stainless Steel); EliteCoreAudio FB4+AC Recessed Floor Box; Arlington Retrofit Floor Boxes (Black and Dark Brown); ENERLITES Nickel Plated Brass Flip Lid Floor Box Assembly. This table presents key attributes to assist in quick comparisons across installation needs, materials, and safety features.
Access Floor Systems In-floor Electrical Box With Cover
The large in-floor electrical box from Access Floor Systems is designed for computer rooms and raised floors, with a steel (Ssteel) body intended for elevated floor environments. The assembly includes plates for two standard duplex outlets, two double RJ45 plates, and a grommeted plate, plus a cover featuring a depression for a carpet insert. Note: This unit is specified for computer room raised floor use and is not UL listed for general use, emphasizing its specialized application and installation context.
Key considerations: suitability for raised floor applications, compatibility with standard outlets and data ports, and the presence of a carpet insert option. This product prioritizes access and organization in high-traffic server or workstation areas, where floor boxing must align with modular layouts and cable management needs.
Access Floor Systems Compact Electrical Box With Cover
The compact square steel box is designed for computer floor use and includes a cover. It’s explicitly noted as not UL listed for general use, reinforcing its tailored purpose for raised-floor environments. The standard cut-out requirement is 5.25″ x 6.5″, which helps determine fitment with outlets and socket configurations in tight, modular spaces.
Key considerations: dedicated computer-floor use, precise cut-out dimensions, and UL listing status. This option suits projects where a compact footprint is needed for limited access between raised-floor panels while maintaining a clean aesthetic and simplified cable routing.
ENERLITES 5” x 2.8” Floor Box Kit With Brass 20A Receptacle
This 1-gang kit includes a 20A tamper-weather resistant duplex receptacle and a watertight gasket, designed for installation on raised floors in commercial or residential settings. It supports installation on wood, tile, carpet, or granite/marble countertops, but is not intended for concrete. The screw covers help prevent dirt buildup and reduce tampering by children or animals, enhancing safety and longevity in busy spaces.
Key considerations: weather resistance, compatibility with multiple floorings, and tamper protection. It’s well-suited for offices, conference spaces, and retail areas where durable, accessible power is needed without a concrete slab application.
ENERLITES 5” X 2.8” Floor Box Kit In Stainless Steel
This stainless steel version mirrors the brass kit’s purpose and specifications, including a 5” x 2.8” 1-gang footprint and a 20A tamper-resistant duplex receptacle with a watertight gasket. The stainless steel construction provides enhanced corrosion resistance and a modern finish for high-traffic areas. Like the brass variant, it is intended for raised-floor installations and is not suitable for concrete slabs.
Key considerations: material choice (stainless steel vs brass), corrosion resistance, and compatibility with standard 20A circuits. The stainless option is ideal for spaces demanding a cohesive, durable look with robust protection against wear and environmental exposure.
EliteCoreAudio FB4+AC Recessed Floor Box
The EliteCoreAudio recessed floor box features four XLR connections plus one duplex AC connection, housed in a heavy-duty steel enclosure. The hinged door includes cable grooves to support neat cable routing and quick access. This configuration suits multimedia setups in conference rooms, performance spaces, and studios where audio connections require a discreet, integrated floor-level access point.
Key considerations: multi-connection versatility, recessed design, and quality of construction. This option balances audio/visual needs with electrical access, enabling clean installations for professional environments where gear and floor space are optimized.
ARLINGTON Retrofit Electrical Floor Box (Black)
This retrofit floor box from Arlington is designed for existing floors, delivering 20.0 cubic inches of space and a flush-to-floor installation. Included components cover the essential box, NM94 connector, duplex receptacle, back plate, gasketed cover, and five #6-32 screws. The product aims to simplify retrofits while maintaining a clean, integrated look that blends with surrounding flooring.
ARLINGTON Retrofit Electrical Floor Box (Dark Brown)
The dark brown variant provides the same 20.0 cubic inch capacity and retrofit approach as the black model, designed for existing floors with a flush-to-floor result. It includes the same components: NM94 connector, duplex receptacle, back plate, gasketed cover, and screws. This option complements spaces with darker flooring or wood tones, offering a cohesive aesthetic while preserving accessibility and serviceability in retrofit projects.
ENERLITES 975549-S Nickel Plated Brass Flip Lid Floor Box Assembly
This nickel-plated brass, 2-gang floor box assembly combines a flip-lid design with a 20A tamper-resistant duplex receptacle. The overall dimensions are 5″ x 5″ x 4.16″, with cover and junction box measurements specified to ensure correct alignment with raised-floor installations. The unit is designed for floors with raised foundations or subfloors and emphasizes flush mounting and easy access to outlets while reducing dirt ingress and tampering risk.
Buying Guide: Key Considerations for Raised Floor Electrical Boxes
- Application context: Determine whether you need a general-use, computer-floor-specific, or retrofit solution. Some models are not UL-listed for general use and are intended for raised floors only.
- Material and finish: Choose between steel, stainless steel, brass, and nickel-plated brass based on corrosion resistance, wear tolerance, and aesthetics for the space.
- Box capacity and configuration: Assess cubic inches, the number of receptacles, and data ports. Consider 1-gang vs 2-gang designs and whether XLR audio connections or extra outlets are needed.
- Water and dust protection: Look for watertight gaskets and weather-resistant features if the floor boxes are near moisture-prone areas or high-traffic spaces.
- Install method: Choose between recessed, flush-to-floor, or retrofit styles to fit existing floors, carpet, tile, wood, granite, or marble substrates.
- Safety and tamper resistance: Tamper-resistant receptacles and protective covers reduce tampering and debris intrusion in busy environments.
- Compatibility with floor systems: Ensure the box cut-out and mounting provisions align with the raised-floor grid and subfloor structure of your space.
- Maintenance and accessibility: Consider hinged doors, cable grooves, and gasketed components to simplify service and cable management.
- UL listing and certifications: For general-use applications, prioritize UL-listed options; some products are specified for computer floors or retrofit only.
When selecting raised-floor electrical boxes, it is important to evaluate the specific installation environment, anticipated load, and the mix of electrical and data connections required. The recommended products in this guide provide a balance of durability, ease of installation, and adaptability across typical raised-floor applications, from data center corridors to meeting rooms and public workspaces. Remember to verify compatibility with your floor type and ensure correct cut-out sizes before purchasing.