Middle Atlantic 4IN Prewired Surfacedupbz - 4ATCP2RBZ

Middle Atlantic 4ATCP2RBZ Surface Poke-Through Floor Box — 1-Duplex Prewired, Bronze

Overview

The Middle Atlantic 4ATCP2RBZ is a prewired, surface-mount poke-through floor device from the 4AT Evolution series, designed to bring power and low-voltage connectivity up through a finished floor in commercial environments. The surface cover style means the device sits above the floor plane rather than requiring a fully flush-recessed cutout — a meaningful installation advantage in retrofit situations where slab depth or underlayment thickness make deep-recessed units impractical. At 21" x 8.25" x 8.25" (533.4 x 209.6 x 209.6 mm), this is a full-size unit with the footprint to support integrated service at a workstation, conference table, or AV presentation point. The bronze finish blends with dark wood flooring, executive conference furniture, and upscale reception installations where a silver or black cover would look out of place.

Poke-through devices occupy a specific niche in structured cabling and power distribution — they eliminate the floor duct, wire management spine, or surface raceway that would otherwise be required to bring services to a mid-room workstation. For integrators and AV system designers specifying Middle Atlantic infrastructure products, the 4ATCP2RBZ represents the power-delivery endpoint in a floor-fed service architecture.

Key Features

• Prewired Construction: The 4ATCP2RBZ ships factory-prewired, which cuts field labor at the installation point. Rather than pulling individual conductors through the device body on-site, the electrician terminates to the pre-run leads — reducing time in the floor opening and lowering the risk of wiring errors during rough-in.
• Surface Cover Style: A surface-mount cover sits proud of the floor rather than flush with it, which eliminates the need to precision-match the cutout depth to the slab thickness. In retrofit and renovation installs — where the existing floor structure is unknown until you're already in it — this style absorbs dimensional variation that would cause a flush unit to sit proud or sink below grade.
• Single Duplex Outlet: One duplex receptacle (two outlet faces) services a single workstation position. This keeps the device footprint compact and the floor penetration minimal — appropriate for individual seating positions in a boardroom, training room, or open office pod where over-provisioning a 2- or 3-duplex unit would waste floor real estate.
• Bronze Finish: Specified in bronze to coordinate with darker flooring materials and premium furniture finishes. On a project where the finish schedule calls for oil-rubbed bronze hardware or dark walnut flooring, a mismatched silver cover creates a visible punch-list item. The bronze color is built into the cover, not a field-applied coating.
• Substantial Dimensions (21" x 8.25" x 8.25"): The 21-inch body length accommodates the internal routing of power conductors and any low-voltage cables (data, AV) that may share the poke-through pathway. The 8.25" x 8.25" cross-section is standard for this device class — verify your floor cutout template against the manufacturer spec before core drilling.
• 4AT Evolution Platform: The 4ATCP2RBZ is part of Middle Atlantic's 4AT Evolution poke-through family, which means cover plates, inserts, and compatible power distribution accessories within the series are designed to interchange. If a duplex insert needs to be swapped for a data insert later, the platform architecture supports that without replacing the floor housing.

Integration & Compatibility

Poke-through devices are governed by local electrical code (NEC Article 372 and applicable local amendments) and fire-rated floor/ceiling assembly requirements — confirm with the AHJ whether a fire-rated unit is required for your floor assembly before specifying the 4ATCP2RBZ. The surface cover style is compatible with a range of finished floor types, including carpet, hardwood, and tile, though the transition between the cover base and the floor surface should be reviewed for ADA trip-hazard compliance in high-traffic areas.

As a prewired unit, the 4ATCP2RBZ is designed for connection by a licensed electrician to the branch circuit serving the floor location. Low-voltage cabling (data, USB, AV) is routed separately through the device body alongside the power conductors — coordinate with the structured cabling contractor on conduit sizing and pull sequence before the floor is closed. For broader AV and signal infrastructure planning, the 4AT Evolution series pairs with Middle Atlantic rack and enclosure products for end-to-end system buildouts.

Consult the relevant installation planning resources for floor-box service density, branch circuit loading, and ADA compliance guidance when specifying this device in occupied commercial spaces.

Frequently Asked Questions

Q: What is the cover style of the 4ATCP2RBZ — recessed or surface mount?

A: The 4ATCP2RBZ uses a surface cover style, meaning the cover plate sits above the finished floor level rather than flush with it. This simplifies installation in retrofit projects where matching exact slab depth is difficult.

Q: How many outlets does the 4ATCP2RBZ provide?

A: The 4ATCP2RBZ includes one duplex outlet, providing two outlet faces at a single floor location. This is appropriate for single-workstation service points in conference rooms, training rooms, or open-plan office environments.

Q: Is the 4ATCP2RBZ prewired from the factory?

A: Yes — the 4ATCP2RBZ ships factory-prewired, which reduces field wiring labor at the installation point. A licensed electrician still makes the final branch circuit connection on-site.

Q: What are the overall dimensions of the 4ATCP2RBZ?

A: The unit measures 21" x 8.25" x 8.25" (533.4 x 209.6 x 209.6 mm). Verify your floor cutout dimensions against these specs before core drilling — the cross-section determines the required floor penetration size.

Q: What finish color is the 4ATCP2RBZ?

A: The 4ATCP2RBZ is finished in bronze, designed to coordinate with dark flooring materials and premium furniture finishes in executive conference and upscale commercial environments.

Q: Does the 4ATCP2RBZ require a fire-rated floor assembly?

A: Fire-rating requirements depend on your specific floor/ceiling assembly and local code (NEC Article 372 and AHJ jurisdiction). Confirm fire-rating requirements with the authority having jurisdiction before specifying this unit in a rated assembly.

Marty Allison

The 4ATCP2RBZ is a poke-through floor box I'd reach for specifically on retrofit conference room projects — the surface cover style is the decision-maker here. When you're going into an existing slab without knowing exactly what you'll hit at depth, a surface-mount unit absorbs the dimensional unknowns that would leave a flush unit sitting wrong. The 21" body length gives you enough internal run to dress both power conductors and low-voltage cabling cleanly before they exit the floor, which matters on an AV-integrated table where you don't want a spaghetti bundle at the base.

Technical Highlights:

• Surface Cover Style: Sits above the floor plane — eliminates the need to match slab depth precisely, which is the primary installation risk in retrofit poke-through work. A recessed unit in a variable-depth floor is a callback waiting to happen.
• Prewired Factory Construction: Factory wiring means the electrician is terminating leads, not pulling and dressing individual conductors in a confined floor opening. On a multi-unit conference table build with six or eight floor positions, the labor savings across the whole run are real.
• Bronze Finish: Not a trivial spec on a premium finish schedule — a silver or black cover on a dark walnut table surround is a punch-list item on day one. The bronze is integral to the cover, not field-applied, so it won't wear through.

Deployment Considerations:

• The 8.25" x 8.25" cross-section drives your core drill size — pull the exact cutout template from the manufacturer spec sheet before the floor contractor is on-site. A wrong-diameter core in a finished floor is an expensive correction.
• Prewired doesn't mean plug-and-play for the electrical rough-in. A licensed electrician still makes the branch circuit connection; the factory wiring just shortens the work at the floor box itself. Coordinate the circuit home-run and conduit sizing before the slab is closed — you won't get a second chance without significant floor disruption.

The 4ATCP2RBZ is the right call for a single-position executive conference table or fixed training room workstation where the finish schedule calls for bronze hardware and the floor assembly makes a recessed unit risky. If you're specifying multiple positions or need data/USB inserts alongside power, evaluate the broader 4AT Evolution platform for compatible insert options before the order is placed.