Middle Atlantic RC4CTCAB Brass Poke-Thru Finish Flange & Slide Holder

Overview

The Middle Atlantic RC4CTCAB is a brass finish flange and slide holder assembly for the RC4 Series poke-thru system, giving installers a finished, floor-level access point for modular keystone connections in conference rooms, trading floors, and open-plan offices where power and data need to come up through the floor instead of down a wall. RC4CTCAB is the flange and mounting-adapter half of the assembly — the visible brass ring plus the internal hardware that carries the keystone jacks — and it's built to close out an RC4 poke-thru cleanly on both carpet and tile. If you're already running Middle Atlantic RC4 poke-thru boxes, this is the finish-out piece that turns a rough floor core into a usable outlet.

Key Features

• 4-connector keystone capacity: the flange holds four keystone connectors, enough to mix network drops, HDMI, and audio in one floor outlet instead of running separate poke-thrus for data and AV — a real space and labor saver on conference table installs.
• Brass finish: brass is the visible, walked-on surface of the outlet, so it needs to hold up to foot traffic and rolling chairs in a boardroom without looking chewed up in a year — this is a durability and appearance spec, not a cosmetic afterthought.
• 4 in (102 mm) hole diameter: matches the standard RC4 core size, so you're not field-cutting a nonstandard opening — confirm your floor core is bored to this diameter before ordering so the flange seats flush.
• Scrub water gasket, min 1/8 in floor covering thickness: the gasket is rated for wet mopping and scrubbing around the flange, and the 1/8 in minimum covering thickness spec tells you it's engineered to seat correctly against carpet tile or thin commercial flooring — not bare slab.
• Wiremold Open System unloaded adapters included: gives you a direct path to mount Wiremold-style device plates inside the RC4 housing without sourcing a separate adapter kit.
• Ortronics TracJack mounting adapters included: pre-fits Ortronics TracJack keystone modules directly into the flange, so if your structured cabling standard is already Ortronics, there's no adapter hunting.
• Ortronics Series II communication housing included: houses the low-voltage/data side of the assembly separately from power, keeping your keystone data jacks organized and code-appropriate within the poke-thru body.
• 2-year warranty: covers the flange and slide-holder assembly for two years from the manufacturer, a factor worth weighing against how often this floor box will see furniture moves and foot traffic.

Integration & Compatibility

RC4CTCAB is a component of the Middle Atlantic RC4 poke-thru platform — it's the finish flange and slide holder, not a standalone floor box, so it's intended to pair with an RC4 series poke-thru body already installed or specified for the job. Modular jacks (RJ45, HDMI, USB, etc.) are sold separately and snap into the included TracJack and Wiremold-compatible adapters, which gives you flexibility to configure the outlet for whatever mix of network and AV connectivity the room needs. If you're speccing a full conference room build-out, pair this with the appropriate mounting solutions for the AV equipment feeding the floor box, and check a PoE and cable planning guide before finalizing keystone counts if any of the four connectors will carry network power. For rooms where the poke-thru feeds camera or AV-over-IP runs, review compatible cable and connector options so the keystone selection matches the rest of the run.

What's in the Box

• 1x RC4CTCAB brass finish flange and slide holder assembly
• Wiremold Open System unloaded adapters
• Ortronics TracJack mounting adapters
• 1x Ortronics Series II communication housing

Frequently Asked Questions

Q: How many keystone connectors does the RC4CTCAB support?

A: The RC4CTCAB flange holds up to 4 keystone connectors. Modular jacks themselves are sold separately.

Q: What size floor core does the RC4CTCAB require?

A: It's built for a 4 in (102 mm) diameter hole, matching the standard RC4 series poke-thru core size.

Q: Can the RC4CTCAB be installed under carpet?

A: Yes. It includes a scrub water gasket and is rated for a minimum floor covering thickness of 1/8 in, suitable for carpet tile or similar thin commercial flooring.

Q: What's the warranty on the RC4CTCAB?

A: It carries a 2-year manufacturer warranty.

Q: Does the RC4CTCAB include jack adapters?

A: Yes — it ships with Wiremold Open System unloaded adapters, Ortronics TracJack mounting adapters, and an Ortronics Series II communication housing.

Karl Wilson

The RC4CTCAB is the piece people forget to spec on an RC4 poke-thru job and then scramble for at rough-in — it's the finish flange and slide holder, not the box itself, and it's what makes the floor outlet actually look and function like a finished product. On a recent conference room retrofit, this is exactly the SKU that closes out the visible, walked-on side of the install.

Technical Highlights:

• 4-connector keystone capacity: lets you combine data, HDMI, and audio drops in a single 4 in floor core instead of coring multiple holes — fewer penetrations, less structural sign-off hassle on slab floors.
• 4 in (102 mm) hole diameter: this is a fixed dimension — if your core isn't bored to spec, the flange won't seat, so confirm this before the concrete crew leaves.
• Min 1/8 in floor covering thickness with scrub water gasket: tells you this flange is engineered for carpet tile installs that get wet-mopped, not bare polished concrete — match the gasket spec to your actual flooring before ordering.

Deployment Considerations:

• The included Ortronics TracJack and Wiremold Open System adapters mean you're not sourcing third-party jack carriers separately — but the keystone modules themselves (RJ45, HDMI, etc.) are still a separate line item.
• Brass finish holds up under rolling chairs and foot traffic better than plastic trims, but it's a visible surface — factor room aesthetics and finish-matching into the spec, not just function.

Right fit for a boardroom or trading-floor poke-thru retrofit where an existing RC4 series box just needs a finished brass flange and keystone slide holder — not a starting point if you haven't already selected the RC4 poke-thru body it mounts to.