Middle Atlantic NM Transition FTG Left 54 - 5408L

Middle Atlantic 5408L Non-Metallic Raceway Transition Fitting — Left, 5400 Series

Overview

The Middle Atlantic 5408L is a left-side transition fitting designed for use with Middle Atlantic's 5400-series non-metallic raceway and cord cover systems. At 6.8 in wide and 1.8 in tall, this fitting provides a clean directional change in your cable management path — bridging raceway runs that need to shift planes without exposed wiring or improvised patch points. If you're extending raceway from a wall section into a drop or cabinet entry, the 5408L handles the geometry so the installation looks intentional rather than improvised.

TAA compliance makes the 5408L a viable choice on government and federally funded projects where Trade Agreements Act sourcing is a contract requirement. Verify TAA requirements with your project documentation before spec'ing any components — this fitting satisfies that requirement for the 5400 series.

The ivory color matches standard commercial interior finishes and coordinates with the broader Middle Atlantic raceway and cord cover line. If your installation uses a different color variant of the 5400 series, confirm the color code before ordering — mismatched sections are obvious post-install and difficult to correct without pulling the run.

Key Features

• Left-Orientation Transition: Handles left-side directional changes in the raceway run — the 5408L is orientation-specific, so confirm left vs. right before ordering. The mirror image right-side fitting is a separate SKU.
• Compact Footprint (6.8 in × 1.8 in): Low-profile enough to fit in tight wall transitions and above ceiling tile returns where larger fittings would interfere with adjacent infrastructure.
• TAA Compliant: Meets Trade Agreements Act sourcing requirements — relevant for federal, state, and municipal projects with FAR or contract-level TAA clauses.
• Ivory Finish: Coordinates with standard commercial drywall and ceiling tile finishes; blends into light-colored office and corridor environments without requiring paint.
• Non-Metallic Construction: Lightweight and non-conductive — appropriate for low-voltage data and signal cable management where metallic conduit is not required or preferred.

Integration and Compatibility

The 5408L is designed for the Middle Atlantic 5400-series non-metallic raceway system. Pairing fittings outside the matched series is not recommended — dimensional tolerances between raceway families differ enough to create gaps or binding at connection points. For inside corners, outside corners, and right-side transitions, specify the corresponding 5400-series fittings to maintain a continuous, gap-free run.

For structured cabling installations combining raceway with patch panels or network switches, review your network infrastructure layout before finalizing raceway routing — fitting placement determines cable bend radius at transition points, which matters for Cat6A and fiber runs.

Frequently Asked Questions

Q: Is the Middle Atlantic 5408L TAA compliant?

A: Yes. The 5408L is TAA compliant, making it suitable for federally funded projects with Trade Agreements Act sourcing requirements.

Q: What color is the 5408L?

A: Ivory. Verify this matches your installed 5400-series raceway before ordering, as color mismatches are visible post-installation.

Q: What are the dimensions of the 5408L?

A: Width is 6.8 in (17.3 cm) and height is 1.8 in (4.6 cm).

Q: Is the 5408L a left- or right-side fitting?

A: Left side. If you need a right-side transition, that is a separate SKU in the 5400 series.

Q: What raceway series is the 5408L compatible with?

A: The 5408L is designed for the Middle Atlantic 5400-series non-metallic raceway and cord cover system.

Marty Allison

When I specify the 5408L on a project, the detail I always flag to the installer first is orientation — this is a left-side-only fitting. I have seen jobs stall because someone ordered a full box of these and needed the right-side mirror, and the 5408L does not convert. At 6.8 in wide and 1.8 in tall, it fits neatly in the tight transitions we typically see in above-ceiling or wall-chase runs, but the directional commitment is fixed at the factory.

Technical Highlights:

• TAA Compliance: Confirmed for the 5408L — covers federal, DoD, and GSA schedule projects where FAR 52.225-5 applies. One less compliance item to chase down at closeout.
• Compact Profile (1.8 in H × 6.8 in W): Low enough to clear standard 2-in raceway channels without protruding past adjacent infrastructure — matters in congested above-ceiling environments where every half-inch counts.
• Non-Metallic Construction: No grounding concerns for low-voltage signal runs; lighter than metallic alternatives, which reduces cumulative load on clip-mounted raceway over long horizontal runs.

Deployment Considerations:

• Ivory finish matches most commercial 5400-series stock, but if the existing run was installed years ago, pull a sample section before ordering — ivory formulations shift slightly across production batches and the mismatch reads as a quality issue on final walkthrough.
• This fitting handles the transition geometry only — it does not include end caps or coupling to the adjacent straight sections. Budget the corresponding straight-run and coupling hardware from the 5400 series separately, or the fitting sits isolated with open ends.

The 5408L is the right call on federal and municipal projects running 5400-series NM raceway where TAA documentation is required at closeout — and where the raceway path makes a left-direction plane change that a straight section cannot handle.