Middle Atlantic 12PC. PHBL-2 Contract PAC - PHBL2-CP12

Middle Atlantic PHBL2-CP12 2RU Blank Rack Panel — 12-Pack Contractor Pack

Overview

The Middle Atlantic PHBL2-CP12 is a flat 2RU blank panel engineered for standard 19-inch equipment racks — the straightforward solution for covering unused rack space in security head-end enclosures, AV equipment rooms, server closets, and access control infrastructure racks. Sold in a 12-pack contractor pack, this SKU is sized for integrators stocking ahead of multi-rack deployments rather than sourcing one blank at a time.

Blank panels do one job, but they do it in ways that matter: they block convective airflow bypass through open rack slots, which is the primary cause of thermal stratification in enclosed racks. A rack full of gaps is a rack where hot exhaust recirculates into intake — especially problematic for NVRs, managed PoE switches, and access control panels running 24/7. Covering those slots with the PHBL2-CP12 keeps airflow directional and temperatures predictable.

Explore the full Middle Atlantic rack infrastructure line for enclosures, cable management, and power distribution that pair with this panel.

Key Features

• 2RU Flat Panel Form Factor: Covers two rack units per panel — useful when you have a pair of unused 1RU gaps adjacent to each other, or a single 2RU slot between active equipment. Eliminates the need to mix multiple single-unit blanks to cover the same opening.
• 11-Gauge Aluminum Construction: Thicker than the thin-stamped steel panels common in generic rack kits. 11-gauge aluminum resists flex and rattle in mobile racks, wall-mount enclosures, and any installation subject to vibration — a practical consideration in industrial or warehouse environments where racking sees physical contact.
• Black Powder Coat Finish: The matte black powder coat matches standard rack finishes from Middle Atlantic and most other rack manufacturers, keeping the appearance consistent across mixed-brand rack builds. Powder coat is also more durable than paint under repeated panel swaps during rack reconfigurations.
• Standard 19-Inch Width: Fits any EIA-310-compliant 19-inch rack — network racks, open-frame security enclosures, wall-mount swing-out frames, and floor-standing data cabinets. No modifications needed.
• Lightweight Aluminum, Easily Machined: Field-modifiable for integrators who need to add cable pass-throughs, ventilation slots, or panel labels without sourcing a specialty part. Cut it, punch it, or drill it on-site without the hardness issues you'd encounter with steel.
• 12-Pack Contractor Quantity: A single PHBL2-CP12 order covers six 2RU gaps across multiple racks — practical for rack staging on commercial projects without per-panel sourcing overhead. Stock multiples if you're outfitting an entire equipment room.

Integration & Compatibility

The PHBL2-CP12 installs in any standard 19-inch EIA-310 rack rail system. It mounts directly to rack rails using standard 10-32, 12-24, or M6 cage nuts and screws depending on your rack's rail type — hardware typically supplied by the rack manufacturer or available separately. The panel is compatible with rack accessories from Middle Atlantic and other vendors without modification.

These panels are a natural complement to Middle Atlantic rack enclosures and wall-mount frames. If you're building out a security or AV rack from scratch, pair blanks with a rack power distribution unit and structured cable management panels for a clean, serviceable installation. For integrators planning larger deployments, review our rack infrastructure planning guide to size blank panel quantities alongside active equipment.

What's in the Box

12x Middle Atlantic PHBL2-CP12 2RU Flat Blank Panels (black powder coat aluminum)

Note: Rack mounting hardware (cage nuts, screws) not included — source separately to match your rack rail specification.

Frequently Asked Questions

Q: What rack unit size is the PHBL2-CP12?

A: The PHBL2-CP12 is a 2RU (two rack unit) blank panel. It covers two rack units of open space in a standard 19-inch rack.

Q: What material is the PHBL2-CP12 made from?

A: It is constructed from 11-gauge aluminum with a black powder coat finish — thicker than typical stamped panels and field-machinable if you need to add cutouts or pass-throughs on site.

Q: How many panels come in the PHBL2-CP12 contractor pack?

A: The PHBL2-CP12 is sold as a 12-pack contractor pack, providing 12 individual 2RU blank panels per order.

Q: Will the PHBL2-CP12 fit my non-Middle Atlantic rack?

A: Yes. The panel is 19 inches wide and designed for standard EIA-310-compliant 19-inch racks, which covers the vast majority of network, security, and AV rack enclosures on the market regardless of manufacturer.

Q: Does the PHBL2-CP12 include mounting hardware?

A: No mounting hardware is included in the package. You will need cage nuts and screws matched to your rack's rail specification (10-32, 12-24, or M6 are the common standards).

Q: Why use a blank panel instead of leaving rack slots open?

A: Open rack slots allow hot exhaust air to recirculate back into equipment intakes — a leading cause of thermal issues in enclosed racks running NVRs, switches, and other active gear 24/7. Blank panels maintain directed airflow from front to rear and keep rack temperatures predictable.

Marty Allison

The PHBL2-CP12 is one of those parts that experienced integrators buy by the case — not because it's exciting, but because showing up to a rack build without blanks means either improvising with cardboard or shipping a truck back for a $15 part. The 12-pack contractor quantity is the right unit of measure for anyone running multi-rack security head-end builds, and the 11-gauge aluminum construction means these won't flex or rattle loose the way thinner stamped blanks do over time.

Technical Highlights:

• 11-Gauge Aluminum: Meaningfully stiffer than the 16-gauge or thinner stamped steel common in generic blanks — holds flat under rack rail clamping pressure and doesn't develop the harmonic rattle that plagues thin panels in racks near HVAC or mechanical vibration sources.
• Black Powder Coat Finish: Matches Middle Atlantic rack finishes directly, and reads well against most other manufacturers' matte-black enclosures. More durable than spray paint — won't chip during repeated panel swaps on active rack builds.
• 2RU Flat Form Factor: Two rack units per panel reduces the number of individual parts to manage on a build. On a rack with four 2RU gaps, you need four PHBL2-CP12 panels — not eight single-unit blanks. Faster to install, fewer cage nuts, less chance of losing hardware in the field.

Deployment Considerations:

• These panels ship without mounting hardware — confirm your rack rail standard (10-32 for most Middle Atlantic, 12-24 for older racks, M6 for metric systems) and have cage nuts and screws on hand before install. A missing bag of cage nuts will hold up a rack close-out.
• The aluminum is described as easily machined, which is accurate — but plan any field modifications (grommeted cable cutouts, ventilation slots) before the panels go into a finished rack. Cutting aluminum inside a live equipment room creates debris that can damage active gear.

The PHBL2-CP12 (often searched as PHBL2 CP12) is the right stock item for commercial security and AV integrators staging equipment rooms with multiple 19-inch racks — particularly in healthcare, education, and corporate environments where a clean, consistent rack appearance is part of the close-out walkthrough.