Middle Atlantic Large Capacity 4IN. Deep - RFB9

Middle Atlantic RFB9 Large Capacity 4-Inch Deep Carpet Cover Assembly

Overview

The Middle Atlantic RFB9 is a large-capacity, 4-inch deep carpet cover assembly designed for use with the RFB9 and RFB11 series concrete floor boxes. At 12.5 inches deep and 1.75 inches wide, the RFB9 provides ample interior volume for terminating low-voltage infrastructure — structured cabling, AV connections, and security device wiring — cleanly at floor level in commercial and institutional environments. TAA compliance makes it a straightforward specification for government, education, and federal procurement projects. If you are wiring conference rooms, open-plan offices, or lobby areas where surface-mounted conduit is not an option, this is the type of component that keeps the installation professional and code-friendly.

The aluminum gray finish integrates unobtrusively with commercial carpet, and the cover profile at 1.5 inches height sits low enough to avoid a trip hazard in high-traffic zones. Browse the full Middle Atlantic catalog for compatible floor box hardware and rack infrastructure.

Key Features

• 12.5-Inch Interior Depth: At 31.8 cm deep, the RFB9 accommodates bulkier low-voltage connectors, keystone modules, and cable slack without forcing tight bend radii — important when terminating shielded Cat6A or multi-conductor security cable at a floor outlet. Shallow boxes routinely cause installers to kink cable or leave connectors partially seated.
• 1.75-Inch Width (4.4 cm): The narrow footprint keeps the floor box compact in finished commercial flooring, reducing the visible tile-cut or carpet patch required during installation. This matters in retrofit projects where minimizing disruption to existing flooring is part of the scope.
• 1.5-Inch Low-Profile Cover Height: The 3.8 cm cover height sits flush enough with commercial carpet to meet ADA and general trip-hazard clearance expectations in occupied spaces. Confirm exact compliance with your AHJ, but the low profile is designed for foot-traffic areas.
• TAA Compliant: Verified TAA (Trade Agreements Act) compliance means the RFB9 can be specified on GSA schedules and federal, state, and local government projects without triggering a country-of-origin exception. If you are bidding a government facility or a DoD-adjacent installation, this saves a separate compliance review step.
• Aluminum Gray Color: The aluminum gray finish is the standard commercial neutral — it disappears into most commercial carpet tile palettes and avoids the visual friction of a stark black or chrome cover in a finished interior environment.
• Designed for RFB9 and RFB11 Series Concrete Floor Boxes: This cover assembly is purpose-built for the Middle Atlantic RFB9/RFB11 concrete floor box series, which means fit, retention hardware, and cover-to-box clearances are factory-matched. Mixing cover assemblies from different manufacturers on poured-concrete floor boxes is a common source of installation callbacks — using matched components eliminates that variable.

Integration & Compatibility

The RFB9 carpet cover assembly is specified for use with Middle Atlantic concrete floor boxes in the RFB9 and RFB11 series. It is appropriate for low-voltage applications including structured cabling, security intercom wiring, IP camera network drops, and AV distribution in commercial slab-on-grade or elevated concrete floor construction. It is not rated for power (line voltage) terminations — confirm your electrical code requirements before specifying for any mixed low-voltage/power application. TAA compliance supports procurement under government network infrastructure contracts. For projects requiring a complete floor-to-rack pathway, pair with Middle Atlantic cable management accessories to maintain bend radius and separation from power runs through the floor plenum.

Frequently Asked Questions

Q: Is the Middle Atlantic RFB9 TAA compliant?

A: Yes. The RFB9 is verified TAA (Trade Agreements Act) compliant, making it eligible for federal, state, and local government procurement under GSA schedules.

Q: What floor box series is the RFB9 cover assembly compatible with?

A: The RFB9 carpet cover assembly is designed for use with Middle Atlantic's RFB9 and RFB11 series concrete floor boxes. Using it with other manufacturers' floor box bodies is not recommended as fit and retention hardware are matched to the Middle Atlantic series.

Q: What is the interior depth of the RFB9?

A: The RFB9 provides 12.5 inches (31.8 cm) of depth — enough clearance for bulkier low-voltage connectors, keystone modules, and cable slack without forcing tight bend radii on structured cabling or shielded cable.

Q: What color is the RFB9 cover?

A: The RFB9 is finished in aluminum gray, a standard commercial neutral that integrates with most commercial carpet tile palettes in office and institutional environments.

Q: Can the RFB9 be used for electrical (line voltage) terminations?

A: The RFB9 is designed for low-voltage applications. It is not rated for line-voltage power terminations. Confirm your local electrical code requirements before specifying for any mixed-use application.

Q: What is the cover profile height of the RFB9?

A: The cover sits at 1.5 inches (3.8 cm) above the floor surface — a low profile appropriate for foot-traffic areas in commercial interiors. Verify ADA and local AHJ requirements for your specific installation.

Jerry Tildsen

The RFB9 is a purpose-matched cover assembly for Middle Atlantic's concrete floor box series — not a generic aftermarket fit. The 12.5-inch interior depth is the detail I always check first on a floor box spec: most integrators underestimate how much vertical space a properly dressed Cat6A termination or an IP intercom cable bundle actually needs, and a shallow box forces a service loop compromise that comes back as a callback six months later.

Technical Highlights:

• 12.5-In Depth (31.8 cm): Provides genuine working room for keystone module stacks, shielded cable terminators, and a proper service loop — all in a single-gang floor location without cramming.
• 1.5-In Cover Height (3.8 cm): Low enough for commercial occupied-space installation in foot-traffic corridors and open-plan offices without creating a code or trip-hazard conversation with the GC.
• TAA Compliance: Confirmed for the RFB9 specifically — no country-of-origin research required when writing the spec for a GSA or government-funded facility project.

Deployment Considerations:

• This is a cover assembly only — it pairs with the Middle Atlantic RFB9/RFB11 concrete floor box body. Verify the floor box body is already in the project BOM before ordering the cover; mismatched cover-to-body combinations from different manufacturers are a known installation failure point.
• The aluminum gray finish matches standard commercial carpet tile environments, but if your project specifies a custom floor box color (e.g., black for raised-access floor tile), confirm the finish before ordering — the RFB9 is documented in aluminum gray only in the available evidence.

For government facility builds, federal courthouses, or institutional projects where TAA compliance is a hard bid requirement on every low-voltage infrastructure component, the RFB9 is the straightforward specification — verified compliant, matched to the floor box series, and sized for real-world low-voltage termination loads rather than just passing a cable through.