Middle Atlantic 525HB In-Floor Service Fitting Housing and Base
The Middle Atlantic 525HB is a four-piece, brushed aluminum service fitting housing and base plate engineered for in-floor installation in commercial environments where audio/video and communications services need to be brought to a workstation, conference table, or AV integration point cleanly and safely. At 4-7/16" x 3" x 3-1/8" and weighing 0.85 lbs, the 525HB is compact enough to drop into a standard in-floor monument or poke-through fitting cutout without complex prep work. If you're expanding an existing 525 Series installation to accommodate additional A/V devices or low-voltage services, this is the housing assembly that makes that possible.
Key Features
- Four-Piece Construction: The 525HB ships as a complete four-piece assembly — housing body, base plate, and associated hardware — meaning you're not sourcing components from multiple SKUs to make a single in-floor outlet functional. That matters on commercial installs where BOM accuracy directly affects job cost.
- Brushed Aluminum Finish: The brushed aluminum finish holds up to foot traffic, chair casters, and repeated service access without showing wear the way painted or powder-coated steel would. In conference rooms and executive spaces where the floor fitting is visible, the finish reads as intentional rather than utilitarian.
- Metal Construction: All-metal construction means the housing withstands the mechanical load of in-floor use — people stepping near it, cleaning crews running floor buffers over it, and the repeated open/close cycles of active A/V service points. Plastic housings in high-traffic floors crack; this one won't.
- Compact Footprint (4-7/16" x 3" x 3-1/8"): The 525HB's dimensions are sized to fit within the 525 Series monument footprint — critical when you're retrofitting into a finished floor where the cutout is already fixed. Verify your existing monument dimensions before ordering if this is a retrofit application.
- UL Listed (US and Canada): UL listing covers both the US and Canadian markets, which simplifies procurement on cross-border projects or Canadian installations. Facilities managers and AHJs in both countries can sign off without chasing supplemental certification documentation.
- RoHS Compliant: RoHS compliance means the 525HB meets EU and most state-level hazardous materials restrictions — relevant for government facilities, healthcare, and any project with environmental compliance requirements baked into the spec.
- Made in USA: Domestic manufacture supports TAA-eligible project procurement and Buy American Act requirements on federally funded construction. It also means lead times are more predictable than import-dependent products.
- 525 Series Family Compatibility: The 525HB is part of the Middle Atlantic 525 Series ecosystem. The housing and base is designed to pair with 525 Series service fitting inserts and covers, so you can configure the floor outlet for specific connector types — audio, video, data — without replacing the housing itself when service requirements change.
Integration and Compatibility
The 525HB integrates within the cable management infrastructure of commercial and institutional AV/IT installations. It's designed specifically for in-floor service fitting applications where the housing sits below the finished floor surface and the service inserts are accessed from above. Integration points to consider:
- In-Floor Monument Systems: The 525HB is intended for pedestal-style in-floor monument installations — conference tables, open office collaboration areas, and auditorium floors where overhead cable drops are not viable. Confirm your monument or poke-through fitting accepts the 525 Series dimensions before specifying.
- Audio/Video Service Expansion: Per the product description, the 525HB is explicitly designed to expand in-floor service points to include A/V devices — not just data or power. For AV integrators adding HDMI, DisplayPort, or analog audio to an existing floor outlet plan, this is the housing that supports that expansion without a new floor cut.
- Low-Voltage Wiring Infrastructure: This is a low-voltage cable management component, not a power distribution device. It should be installed in coordination with your low-voltage cable management plan and local AHJ requirements for in-floor wiring methods. Separation from line-voltage conductors per NEC Article 800 applies.
- Finish Coordination: The brushed aluminum finish coordinates with Middle Atlantic rack and enclosure hardware for consistent aesthetics in spaces where the AV infrastructure is partially visible — a common consideration in boardrooms and high-end conference environments.
Frequently Asked Questions
Q: What is included in the 525HB package?
A: The 525HB is a four-piece assembly consisting of the service fitting housing and base plate components. For exact part counts and hardware included, refer to the Middle Atlantic 525 Series installation documentation.
Q: Is the 525HB UL listed for use in the United States and Canada?
A: Yes. The 525HB meets UL standards for both the US and Canada, simplifying specification and approval on cross-border or Canadian projects.
Q: Is the 525HB RoHS compliant?
A: Yes. The 525HB is RoHS compliant, meeting hazardous materials restrictions applicable to government, healthcare, and environmentally regulated facilities.
Q: Is the 525HB made in the USA?
A: Yes. The 525HB is manufactured in the United States, supporting TAA-eligible and Buy American Act procurement requirements on federally funded projects.
Q: What type of installation is the 525HB designed for?
A: The 525HB is designed for in-floor pedestal installation. It is part of the 525 Series service fitting system, intended for conference rooms, open office environments, and AV integration points where below-floor cable routing is required.
Q: Can the 525HB be used to add audio/video services to an existing in-floor installation?
A: Yes. The product is explicitly described as expanding the range of in-floor services to include audio/video devices, making it appropriate for AV service expansion within the 525 Series platform.
The 525HB is the piece that gets overlooked in floor-outlet specs until someone tries to add an HDMI or audio feed to a table that was only wired for data. The four-piece housing and base assembly at 4-7/16" x 3" x 3-1/8" is purpose-built for the 525 Series in-floor monument ecosystem, and its all-metal, brushed aluminum construction is what separates it from the plastic floor boxes you'll find at the electrical supply house — particularly relevant in conference and boardroom installs where the fitting takes mechanical abuse daily.
Technical Highlights:
- Four-Piece Metal Assembly: Complete housing and base plate in one SKU — no hunting for separate components; the 525HB arrives ready to drop into a 525 Series monument cutout.
- Dual-Market UL Listing: UL listed for both US and Canada — on multi-site enterprise or healthcare projects that span borders, this eliminates a separate compliance conversation with the AHJ on the Canadian side.
- 0.85 lb Metal Construction: At under a pound, the all-metal build doesn't add meaningful weight to the floor assembly, but the material choice means it survives the repeated open/close cycles and incidental foot traffic that plastic housings fail under in 12–18 months.
Deployment Considerations:
- Verify monument cutout dimensions match the 525 Series footprint before committing to a retrofit — the 525HB is sized for its platform, not a universal fit across all in-floor monument brands.
- This is a low-voltage housing only; NEC Article 800 separation from line-voltage conductors applies. Do not use this housing for power distribution or in combined power/data floor fittings without confirming proper separation compliance with the AHJ.
The 525HB is the right specification for AV integrators expanding conference room and boardroom floor outlets to carry audio/video services alongside data — specifically in environments where the brushed aluminum finish needs to hold up visually and mechanically over a multi-year install lifecycle.
