Middle Atlantic 4IN Unwired PT Assemblybz - 4ATCBZ

Middle Atlantic 4ATCBZ 4-Inch Unwired Poke-Thru Assembly

Overview

The Middle Atlantic 4ATCBZ is a 4-inch unwired poke-thru device from the 4AT Evolution series, designed for in-floor or in-desk cable pass-through installations in commercial AV and structured-cabling environments. "Unwired" means the 4ATCBZ ships without pre-installed outlets or modules — the right choice when you need to specify and install your own power, data, or AV inserts rather than accept a factory-configured kit. The bronze surface-mount cover integrates cleanly into conference tables, trading floors, or boardrooms where finish consistency matters.

At 21 inches long by 8.25 inches wide and 8.25 inches deep (533.4 × 209.6 × 209.6 mm), this assembly provides a substantial interior cavity for routing multiple cable types without congestion. The surface cover style means the cover plate sits flush to the finished surface rather than recessing below it — relevant when your floor or table substrate depth is limited or when you want visible access for end-user cable management. Browse the full Middle Atlantic catalog for compatible modules, covers, and enclosures.

Key Features

• Unwired (Zero Pre-Installed Outlets): No power modules, data jacks, or AV connectors are factory-installed. You select and populate the inserts that match the specific AV, power, or data services the installation requires — no paying for modules you don't need, no field removal of factory-installed components. Pairs well with AV infrastructure accessories you source separately.
• Surface Cover Style: The cover plate mounts at the finished surface level. Appropriate for table-top deployments and installations where sub-surface depth is constrained. Confirm your substrate depth against the 8.25-inch overall depth before specifying.
• Bronze Finish: The bronze color coordinates with commercial furniture hardware in conference rooms, executive suites, and hospitality environments where matte black or silver does not match the installed aesthetic. Finish is fixed at bronze for this SKU — verify the finish requirement before ordering.
• 21 × 8.25 × 8.25 Inch Form Factor: The full 21-inch length accommodates multi-service configurations across a single floor core. The 8.25-inch depth determines the minimum substrate thickness required — plan for this during rough-in before the table or floor finish is set.

Integration and Compatibility

The 4ATCBZ is part of the Middle Atlantic 4AT Evolution poke-thru family. As an unwired assembly, it accepts Middle Atlantic-compatible power, data, and AV insert modules specified at the time of fitout. Consult cable management and structured wiring resources to match insert modules to your AV system requirements. No pre-wired power circuits are included, so electrical rough-in and module population are completed on-site by the installing contractor.

Frequently Asked Questions

Q: Does the 4ATCBZ include any power outlets or data jacks?

A: No. The 4ATCBZ is an unwired assembly — it ships with zero pre-installed outlets or modules. Power, data, and AV inserts are sourced and installed separately by the integrator.

Q: What does "surface" cover style mean on the 4ATCBZ?

A: The surface cover style means the cover plate mounts flush at the finished surface level, rather than sitting below the surface in a recessed configuration. This is relevant for substrates with limited depth or for table-top applications.

Q: What is the finish color of the 4ATCBZ?

A: The 4ATCBZ is finished in bronze. If your installation requires a different finish, verify the finish variant before ordering as this SKU is fixed at bronze.

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

A: The overall dimensions are 21 inches × 8.25 inches × 8.25 inches (533.4 × 209.6 × 209.6 mm). The 8.25-inch depth determines the minimum substrate thickness required for installation.

Q: Is the 4ATCBZ compatible with other Middle Atlantic insert modules?

A: The 4ATCBZ is part of the Middle Atlantic 4AT Evolution series and is designed to accept compatible insert modules. Consult Middle Atlantic's current module lineup to confirm insert compatibility for your specific power, data, or AV requirements.

Marty Allison

The 4ATCBZ is the blank-slate option in the Middle Atlantic 4AT Evolution poke-thru line — and that "unwired" designation is the most important spec on the page. It means the assembly ships with zero pre-installed outlets, so the integrator controls exactly which power, data, and AV modules get populated. That matters on high-spec conference room builds where you cannot afford to field-remove factory modules that conflict with the owner's low-voltage spec.

Technical Highlights:

• Zero Outlets, Full Flexibility: With 0 duplex outlets pre-installed, the 4ATCBZ lets you match the insert configuration precisely to the room spec — no paying for modules you don't need or uninstalling ones you do.
• Surface Cover Style: The cover sits at finished surface level rather than recessing. This is the correct choice when substrate depth is limited or when the table design calls for a flush, accessible top-surface port cluster.
• 21 × 8.25 × 8.25 Inch Assembly: The 8.25-inch depth is the spec that determines rough-in requirements — confirm the table or floor core depth before the finish carpenter closes up. Missing this during rough-in means cutting back to the subfloor or table substrate at finish stage.

Deployment Considerations:

• Rough-in depth is the critical planning spec: the 8.25-inch overall depth must be accounted for in the substrate before the surface finish is installed. Coordinate with the millwork or flooring contractor early.
• This assembly is unwired — no power circuit is included. Electrical rough-in, conduit, and module population are entirely the installing contractor's scope. Do not spec this unit and expect a powered solution out of the box.

The 4ATCBZ is the right call for conference room and boardroom AV fitouts where the integrator is driving the module spec and needs a bronze-finish, surface-cover poke-thru that won't dictate the low-voltage configuration before the room design is finalized.