Middle Atlantic CM2-BL-BK 2A Blank Rack Module

The Middle Atlantic CM2-BL-BK is a 2A blank module in black, built to cover an unused bay in a Middle Atlantic modular rack system. It's a small part with an outsized job: every open slot in an equipment rack is a gap in your airflow plan and an unfinished-looking front panel. CM2-BL-BK closes that gap.

Overview

Rack integrators size bays in these 2A-style modular increments so that blanks, vented panels, and active modules can be swapped without re-cutting a faceplate. CM2-BL-BK is the blank variant — no vents, no cutouts — intended for bays that don't need airflow passage but still need to be closed off. The black finish matches the black hardware and connector plates used across most commercial AV and network racks, so it doesn't stand out as an obvious patch job when viewed next to populated bays.

Key Features

• 2A module sizing: matches the modular bay dimension used across the Middle Atlantic rack system, so it drops into an existing empty slot without adapter plates or trimming.
• Solid blank (no venting): seals the bay completely, which matters when you're managing directional airflow — you don't want unmanaged bypass air short-circuiting a hot-aisle/cold-aisle layout in a rack full of switches or NVR gear.
• Black finish: keeps unused bays visually consistent with black-anodized rack hardware, connector modules, and cable pass-throughs instead of leaving a mismatched gap in the panel.
• TAA-compliant: relevant if the rack build is going into a state, local, or federal procurement that requires Trade Agreements Act compliance on every line item, filler panels included.

Integration & Compatibility

CM2-BL-BK is designed to install into the same 2A module openings used by other components in the Middle Atlantic modular rack line — active modules, vented panels, cable-management inserts. If you're building out a rack for network video recorders or PoE switches and only have a few bays populated, blanks like this keep the rest of the field closed off rather than leaving raw cutouts exposed. For a broader look at how bay count, airflow, and module mix should be planned before you order rack components, see the rack and enclosure planning guide. It pairs naturally with the rest of the Middle Atlantic catalog, and if the build also needs enclosures rather than open-frame racks, check the rack enclosures category for compatible frame styles. CM2-BL-BK (often searched as CM2 BL BK) is typically ordered in multiples to fill out a partially populated rack elevation in one pass rather than one at a time as bays open up.

Frequently Asked Questions

Q: What size bay does the CM2-BL-BK fit?

A: It's sized for a 2A module opening in the Middle Atlantic modular rack system.

Q: Does the CM2-BL-BK have ventilation holes?

A: No — it's a solid blank panel with no venting, intended to fully seal an unused bay.

Q: Is the CM2-BL-BK TAA compliant?

A: Yes, it is listed as TAA-compliant, which matters for government and public-sector procurement requirements.

Q: What color does the CM2-BL-BK come in?

A: Black.

Eden Phillips

The CM2-BL-BK is one of those parts nobody thinks about until a rack elevation review flags three open bays with nothing but wire visible behind them. It's a 2A blank, black finish, and that's really the whole spec sheet — but on a rack build, that's exactly the point.

Technical Highlights:

• 2A module footprint: matches the standard modular opening size used across the rest of the Middle Atlantic rack line, so it swaps in for any bay currently running a vented or active 2A module.
• Solid (non-vented) panel: fully blocks airflow through that bay — important on racks where you're deliberately routing air through specific vented modules and don't want a bypass path.
• TAA-compliant: lets this line item ride along on a government-funded build without becoming the one part that fails procurement review.

Deployment Considerations:

• Order these in the actual count of open bays on the elevation drawing — it's easy to under-order blanks and end up finishing a rack build with a couple of gaps still exposed.
• Because it's a solid blank, don't use it in a bay position where the airflow design actually depends on that slot venting — check the rack's airflow plan first.

Reach for the CM2-BL-BK when you're closing out a rack elevation for an NVR or switch closet build and need the unused bays sealed and cosmetically matched in black before final walkthrough — particularly on a TAA-restricted government contract where every part on the BOM has to qualify.