Middle Atlantic 5506B NM Base Seam Clip

The Middle Atlantic 5506B is a base seam clip for the NM 5500 series rack enclosure line, finished in Ivory to match light-colored equipment room and AV closet installations. It's a small hardware component, but on a multi-bay NM rack run, seam clips are what keep adjoining base sections aligned and structurally tied together — skip them and you're left with visible gaps and a base assembly that shifts under load.

Overview

5506B is a purpose-built fastening component for Middle Atlantic's NM 5500 series base, not a standalone enclosure. It ties adjoining base sections together at the seam, which matters most when you're lining up multiple NM racks side by side in a data closet, control room, or integration bay and need the base to read as one continuous, rigid assembly rather than a row of independently wobbling sections.

Key Features

• Ivory finish: matches lighter equipment room aesthetics and coordinates with NM series enclosures finished in the same color, so the base doesn't stand out against surrounding millwork or wall finishes.
• TAA-compliant sourcing: relevant if this clip is going into a rack build for a government, education, or federal-adjacent integration project where Trade Agreements Act compliance is a procurement requirement.
• Seam-clip function: secures the joint between adjacent NM 5500 base sections, keeping multi-section base runs rigid and properly aligned instead of relying on the enclosures' own weight to hold position.

Integration & Compatibility

5506B is designed specifically for the Middle Atlantic NM 5500 series base — confirm your enclosure is part of that series before ordering, since seam clips are generally not interchangeable across different Middle Atlantic rack base families. If you're speccing a full rack build, pair this with the rest of your rack enclosures and accessories selection, and check a PoE planning guide early if the rack will house network gear, since power and cooling headroom decisions are easier to make before the base is assembled than after.

Frequently Asked Questions

Q: Is the 5506B TAA compliant?

A: Yes, the 5506B is TAA-compliant, which matters for government and federally funded procurement.

Q: What color is the 5506B available in?

A: The 5506B ships in Ivory to match lighter-finish NM series enclosures.

Q: What is the 5506B used for?

A: It's a base seam clip for Middle Atlantic's NM 5500 series rack enclosures, used to join and secure adjacent base sections.

Q: Will the 5506B fit any Middle Atlantic rack?

A: It's built for the NM 5500 series base specifically — verify series compatibility before ordering.

Marty Allison

The 5506B is one of those parts nobody thinks about until a rack row doesn't line up. It's the seam clip for the NM 5500 series base, and its whole job is keeping adjoining base sections tied together at the joint.

Technical Highlights:

• Ivory finish: matches lighter NM series enclosure finishes so the base doesn't clash with the rest of the row.
• TAA compliance: keeps this part usable on federal and federally funded integration jobs where sourcing rules apply.
• NM 5500 series fit: purpose-built for that base family — it's not a universal clip.

Deployment Considerations:

• Order enough clips for every seam in a multi-section base run before the install date — this isn't a part you want to be short on mid-assembly.
• Confirm your enclosure is specifically NM 5500 series; Middle Atlantic runs multiple base platforms and clips aren't universal across them.

Spec this in whenever you're joining two or more NM 5500 base sections into a single equipment row — multi-rack data closets and control room builds are exactly where a loose seam turns into a support ticket six months later.