Middle Atlantic RC4CTCAL Poke-Thru Flange and Slide Cover Assembly

The Middle Atlantic RC4CTCAL is an aluminum poke-thru flange with a black slide cover, built for routing power and low-voltage AV/data cabling up through a finished floor without leaving an open hole when the outlet isn't in use. It's the flange half of a multi-service poke-thru system — the piece that seats in the core drill and gives you a closable, walkable surface once cable drops are terminated. If you're running floor boxes for conference tables, trading desks, or AV control positions, RC4CTCAL is the component that finishes the floor penetration cleanly.

Overview

RC4CTCAL pairs an aluminum flange body with a black slide holder cover, sized for a 4-inch (102mm) diameter core hole. The slide mechanism lets you open the cover to route or service cable and then close it flush when the drop isn't actively in use — important on any floor that sees foot traffic, rolling chairs, or cleaning crews. The finish is aluminum with a black cover insert, a combination chosen for commercial interiors where the poke-thru needs to blend into carpet tile, raised access flooring, or polished concrete without standing out as a bright metal disc in the middle of a room.

Key Features

• 4-inch (102mm) hole diameter: matches standard core-drill sizing used across commercial poke-thru installs, so you're not fabricating a nonstandard opening or hunting for a mismatched trim ring.
• Aluminum flange construction: aluminum resists the corrosion and denting that raw steel trim rings pick up under years of foot and cart traffic in lobbies, huddle rooms, and open-plan floors.
• Black slide cover: the slide-holder design opens for cable access and closes flush for a walkable surface — no separate cap to lose or leave propped open as a trip hazard.
• Minimum 1/8-inch floor covering thickness spec: Middle Atlantic engineers the flange-to-floor relationship around a 1/8-inch minimum covering, so installers know the tolerance before ordering carpet tile, LVT, or other finish flooring around the unit.
• 2 lb unit weight: light enough that a single electrician or AV tech sets and levels the flange without rigging, speeding up rough-in on multi-box floor plans.
• TAA compliant: relevant for integrators bidding government, university, or federally funded commercial projects where Trade Agreements Act sourcing is a bid requirement.

Integration & Compatibility

RC4CTCAL is a flange/cover component within Middle Atlantic's multi-service poke-thru line — it's built to mount into a core-drilled floor opening alongside the matching poke-thru box hardware rather than stand alone. Confirm your poke-thru box and service fittings are sized to the same 4-inch core before ordering, since flange and box components in a poke-thru system are matched by hole diameter. This unit fits naturally into broader mounting solutions planning for conference rooms and control rooms, and pairs with furniture accessories where floor boxes feed cabling up into credenzas or table runs. For teams speccing full AV floor infrastructure, a cable and connectivity planning guide is worth reviewing before finalizing core-drill locations. Browse the complete Middle Atlantic catalog for matching poke-thru boxes, and the cables category for the AV Over IP or data runs typically routed through this flange. RC4CTCAL carries a 2-year manufacturer warranty, consistent with Middle Atlantic's support on its floor and furniture infrastructure hardware.

Frequently Asked Questions

Q: What size hole does the RC4CTCAL require?

A: RC4CTCAL is sized for a 4-inch (102mm) diameter core-drilled hole.

Q: What's the minimum floor covering thickness for this flange?

A: Middle Atlantic specifies a 1/8-inch minimum floor covering thickness for the RC4CTCAL installation.

Q: What color and material is the RC4CTCAL?

A: The flange is aluminum with a black slide cover.

Q: What's the warranty on the RC4CTCAL?

A: RC4CTCAL carries a 2-year manufacturer warranty.

Q: Is the RC4CTCAL TAA compliant?

A: Yes, RC4CTCAL is TAA compliant.

Q: How much does the RC4CTCAL weigh?

A: The unit weighs 2.00 lbs.

Ted Perry

The 4-inch (102mm) core diameter on the RC4CTCAL is the number to check first — it's the standard poke-thru core size, but I've seen installs stall because someone drilled to a different spec before confirming the flange. Get the hole right before the concrete saw shows up.

Technical Highlights:

• 4'' (102mm) hole diameter: standard poke-thru core sizing means you're working with common core-drill bits instead of a specialty tool order.
• 1/8'' minimum floor covering thickness: Middle Atlantic's published tolerance for finish flooring around the flange — confirm your carpet tile or LVT buildup meets it before the poke-thru goes in, or the cover won't sit flush.
• 2 lb weight, aluminum construction: light enough for one person to set and true up during rough-in, and aluminum won't pit or rust the way a steel trim ring can under years of rolling chair traffic.

Deployment Considerations:

• This is the flange/cover half of a multi-service poke-thru assembly — order the matching poke-thru box and service fittings sized to the same 4-inch core rather than assuming universal fit.
• The black slide cover is a mechanical wear part on high-traffic floors; specify it where drops open and close daily, like a conference table power/data box, rather than a rarely-used auxiliary run.

RC4CTCAL fits conference room table boxes and trading-desk floor drops where AV and power need a clean, closable penetration through finished flooring — not a raw open grommet.