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Middle Atlantic 525F Four-Piece Aluminum In-Floor Duplex Service Fitting

Overview

The Middle Atlantic 525F is a four-piece aluminum service fitting designed for in-floor wire and cable management systems that require a clean, finished duplex receptacle opening at floor level. Part of the Middle Atlantic 525 Series, this fitting addresses the recurring problem integrators face when floor boxes and in-floor raceways need a professional termination point for power — one that holds up underfoot, doesn't corrode, and doesn't look like an afterthought in a finished space.

For AV integrators, security installers, and facilities engineers routing power through in-floor cable management systems, the 525F provides the mechanical interface between the floor raceway infrastructure and a standard duplex receptacle — completing the installation without visible gaps, mismatched trim, or improvised covers.

Key Features

• Four-Piece Construction: The 525F ships as a complete four-piece assembly rather than a single stamped plate, which means each component can be positioned independently during rough-in and final trim — useful when floor tolerances shift between the pull-wire stage and finish work, reducing the chance of a misaligned cover plate on day one.
• Aluminum Material: Aluminum construction gives the 525F a better strength-to-weight ratio than plastic trim fittings and resists the surface corrosion that degrades zinc or steel fittings in high-traffic commercial floors over time. It handles repeated foot traffic and cleaning cycles without cracking or discoloring.
• Duplex Receptacle Opening: The opening is sized and finished for a standard duplex receptacle insert — the most common power termination needed in conference rooms, boardrooms, training facilities, and security operations centers where in-floor power feeds workstations, AV equipment, or access control panels. No field cutting required.
• Silver Finish: The silver color coordinates with aluminum floor box systems and standard brushed-metal trim found in commercial interiors. In open-plan offices or finished conference rooms, a mismatched cover color is a visible tell — the silver finish keeps the installation looking intentional.
• In-Floor Systems Category: Engineered specifically for in-floor cable management rather than adapted from surface-mount hardware, so the fit and profile are consistent with the floor box systems it's designed to complement rather than approximated with generic covers.
• 525 Series Compatibility: As part of the 525 Series line, the 525F is designed to work within a family of coordinated fittings — useful when a single floor box needs multiple opening types (data, power, AV) and visual consistency across inserts matters for the end user.

Integration and Compatibility

The 525F is built for deployment in commercial in-floor raceway and floor box systems where a duplex power opening is required. Typical environments include conference centers, corporate boardrooms, security operations centers, training rooms, and any space where underfloor infrastructure feeds flush-mounted power points. It pairs with Middle Atlantic rack and cable management infrastructure and is compatible with standard duplex receptacle inserts sized for commercial floor box applications.

When specifying the 525F alongside data or AV fittings in the same floor box, verify that the 525 Series family covers the full range of opening types required — mixing fitting families in a single box typically results in inconsistent trim heights and mismatched finishes. Coordinate with the floor box manufacturer's fitting matrix before finalizing the bill of materials.

Frequently Asked Questions

Q: What material is the Middle Atlantic 525F made from?

A: The 525F is constructed from aluminum, providing corrosion resistance and durability suited to high-traffic commercial floor installations.

Q: Does the 525F come as a complete assembly?

A: Yes. The 525F is a four-piece fitting that ships as a complete set — no additional trim components are required for a standard installation.

Q: What type of receptacle does the 525F accommodate?

A: The 525F features a duplex receptacle opening, sized for a standard duplex power insert used in commercial in-floor box systems.

Q: What color is the 525F?

A: Silver. The finish is consistent with aluminum floor box trim and brushed-metal commercial interior hardware.

Q: Is the 525F designed for surface-mount or in-floor applications?

A: In-floor. The 525F is part of Middle Atlantic's in-floor wire and cable management category, engineered specifically for flush floor box installations rather than surface raceway use.

Q: What series does the 525F belong to?

A: The 525F is part of the Middle Atlantic 525 Series, a family of coordinated in-floor service fittings designed to work together in multi-opening floor box configurations.

Eden Phillips

The 525F is one of those finishing components that gets overlooked until it's missing from the BOM — and then it holds up the entire punch-list. As a four-piece aluminum fitting with a duplex receptacle opening, it's the mechanical closure between your in-floor raceway infrastructure and the finished power point the client actually sees. I specify the 525F whenever a project's floor box layout calls for duplex power terminations in aluminum-trim environments, because improvising with off-series covers almost always means a height mismatch or a color that's close-but-not-right under conference room lighting.

Technical Highlights:

• Four-Piece Assembly: The multi-piece design lets you complete rough-in and return for trim separately — a practical advantage on phased commercial fit-outs where flooring goes in after the rough-in inspection.
• Aluminum Construction: Resists the surface fatigue that cracks plastic covers in high-traffic zones; aluminum also dissipates minor impact loads from chair casters and foot traffic without deforming the receptacle opening.
• Duplex Receptacle Opening: Matches the standard duplex insert footprint used across most commercial floor box platforms, so you're not field-modifying the opening or ordering a custom adapter.

Deployment Considerations:

• Verify fit against the specific floor box manufacturer's fitting matrix before ordering — the 525 Series is a Middle Atlantic family, and mixing series or brands in a single box typically produces inconsistent trim planes.
• The silver finish reads as aluminum-neutral in most commercial interiors, but if the floor box system uses a darker bronze or black trim, the 525F will stand out — confirm finish compatibility with the floor box spec sheet before the order is placed.

The 525F is the right call for corporate conference rooms, security operations centers, and AV integration projects where in-floor power feeds need a clean, durable duplex termination that holds up over years of daily use without requiring replacement or repainting.