Middle Atlantic Over Floor Raceway Base AND Cover 4FT - This System Installs Over - OFRBC-4

Middle Atlantic OFRBC-4 Over-Floor Raceway Base and Cover, 4 ft

Overview

The Middle Atlantic OFRBC-4 is a 4-foot over-floor raceway base and cover designed to route low-voltage cabling — power, data, and AV — across finished floor surfaces without cutting into the structure. At 6.88 inches wide and just 0.63 inches tall, it sits flat enough to cross a pedestrian path without creating a significant trip hazard, while still providing a protected channel for cable runs that can't be routed through walls, conduit, or under raised flooring. If you're retrofitting a conference room, temporary command center, or security operations workspace where tearing up the floor isn't an option, the OFRBC-4 (often searched as OFRBC 4) is the practical answer.

This is a Middle Atlantic OFR-Series product, part of a family of cable management solutions built for commercial AV and security integration work. The base-and-cover configuration means you route cables into the base channel first, then snap or fasten the cover over them — keeping everything organized and protected from foot traffic and rolling equipment.

Key Features

• 4 ft (1.2 m) section length: A 4-foot section is the standard working unit for this raceway family. Multiple sections connect end-to-end to cover longer runs, and the fixed length makes it straightforward to plan your material count before you're on-site. One section handles a typical doorway crossing or short desk-to-wall run without splicing.
• 6.88 in (17.5 cm) interior width: Nearly 7 inches of usable channel width means you can run multiple cable types side by side — power, Cat6, and coax simultaneously — without bundling them into a single congested loom. This matters on security integration jobs where you're pulling camera power, network drops, and access control wiring to the same endpoint.
• 0.63 in (1.6 cm) installed height: At under two-thirds of an inch above the floor, this profile is low enough to comply with ADA ramp-height guidance for temporary or semi-permanent installations when properly transitioned at the ends. It won't disappear underfoot, but it's far less intrusive than conduit or cable bridges in occupied spaces.
• Installs over existing floor — no demolition required: The entire system mounts on top of whatever surface is already there: carpet, tile, hardwood, concrete. There's no core drilling, no raised-floor panel pulling, and no structural work. That means same-day installation in occupied facilities where downtime is not acceptable.
• TAA Compliant: The OFRBC-4 meets Trade Agreements Act requirements, making it eligible for federal, state, and municipal procurement contracts where TAA compliance is mandated. If you're bidding a government facility integration — courthouses, federal offices, military installations — this is a line item that won't get kicked back by the contracting officer.
• Base-and-cover system: The two-piece design (base channel + matching cover) gives you the ability to stage your cable pull before closing the raceway. Run and dress cables in the open base, verify routing and slack, then apply the cover. Rework is non-destructive — remove the cover, adjust, re-cover. No conduit fittings to cut out.

Integration and Compatibility

The OFRBC-4 is part of Middle Atlantic's OFR Series, which includes complementary components such as couplers, elbows, reducers, and end caps designed to work with this exact profile. When planning a run that turns a corner or transitions to a different raceway width, verify you're sourcing accessories from the same OFR family to ensure dimensional compatibility. This raceway is suitable for low-voltage cabling applications including Cat5e/Cat6 Ethernet, coaxial, and control wiring. Check your local electrical code before routing line-voltage conductors — many jurisdictions restrict mixing power and low-voltage in the same raceway channel without a divider.

For longer cable infrastructure deployments, pair the OFRBC-4 with a structured approach to rack and enclosure planning so your over-floor runs terminate cleanly at the equipment end. See also the cable management planning guide for layout strategies in retrofit environments.

Frequently Asked Questions

Q: Is the OFRBC-4 TAA compliant?

A: Yes. The OFRBC-4 is confirmed TAA (Trade Agreements Act) compliant, making it eligible for use on U.S. federal and government-funded projects that require TAA-compliant products.

Q: How long is one OFRBC-4 section, and can I connect multiple sections end-to-end?

A: Each OFRBC-4 section is 4 feet (1.2 m) long. Multiple sections can be connected in sequence using compatible OFR Series couplers to cover longer runs.

Q: What is the width of the OFRBC-4 cable channel?

A: The OFRBC-4 is 6.88 inches (17.5 cm) wide, providing enough interior space to route multiple cable types — such as Cat6, coax, and low-voltage control wiring — side by side.

Q: How tall is the OFRBC-4 when installed on the floor?

A: The installed profile is 0.63 inches (1.6 cm) above the floor surface — a low-profile height that minimizes trip hazard risk in pedestrian areas.

Q: Does the OFRBC-4 require any floor modification or cutting?

A: No. The OFRBC-4 installs directly over an existing floor surface — carpet, tile, hardwood, or concrete — with no demolition, drilling, or structural work required.

Q: What types of cables can be routed through the OFRBC-4?

A: The OFRBC-4 is suited for low-voltage cabling including Ethernet (Cat5e/Cat6), coaxial, and control wiring. Consult local electrical codes before routing line-voltage conductors in the same channel as low-voltage cables.

James Everett

The OFRBC-4's 0.63-inch installed height is the number I always check first on a retrofit job — at under two-thirds of an inch, it threads the needle between 'cable is protected' and 'nobody trips on it in a live facility.' I've specified this raceway on occupied federal office retrofits where the client wouldn't accept a single hour of floor access, and the base-and-cover system means you can stage the entire cable pull during off-hours, verify routing, and close it out the next morning.

Technical Highlights:

• 6.88 in channel width: Wide enough to run Cat6 data, coax, and low-voltage control wiring in parallel without bundling — critical when you need separation between camera network drops and access control wiring in the same over-floor run.
• 4 ft section length: The fixed 4-foot unit length makes material takeoffs straightforward — count the linear feet, divide by four, add couplers. No field-cutting length decisions on the critical path.
• TAA compliance: Verifiable TAA status on the OFRBC-4 means it clears procurement review on government contracts without a waiver request — a line item that often holds up otherwise-approved bids.

Deployment Considerations:

• Plan your end transitions before ordering — the OFR Series family includes dedicated end caps and reducers, and you'll want those on the same purchase order as the OFRBC-4 sections to avoid a second shipping wait.
• At 6.88 inches wide, this raceway is visible and permanent-feeling in a finished space; confirm with the facility manager that the footprint is acceptable before install, especially in executive or client-facing areas where aesthetics matter.

The OFRBC-4 is the right specification for government and commercial retrofit integrations where TAA compliance is non-negotiable and floor access is off the table — specifically courthouse security upgrades, federal office camera deployments, and conference room AV builds in occupied buildings.