Middle Atlantic 6PC. PHBL-3 Contract Pack - PHBL3-CP6

Middle Atlantic PHBL3-CP6 3U Blank Rack Panel — 6-Pack Contractor Pack

Overview

The Middle Atlantic PHBL3-CP6 is a contractor-quantity pack of six 3U aluminum blank rack panels engineered for standard 19-inch equipment racks. If you're finishing out a rack enclosure — covering unused slots to enforce proper airflow and maintain a clean, professional installation — this is the workmanlike answer. The PHBL3-CP6 ships six panels per pack, which means you're buying in the quantities that actually match a real installation, not ordering one panel at a time.

Blank panels are unglamorous but operationally important: open rack slots disrupt front-to-back airflow, invite cable intrusion, and look unprofessional in client-facing installations. The PHBL Series addresses all three without overcomplicating the solution.

Key Features

• 3U Form Factor: Each panel covers three rack units of vertical space — the most common gap size left after installing 1U and 2U devices. One panel closes three slots cleanly, so you're not stacking multiple thin panels to fill a single gap.
• Aluminum Construction: Aluminum keeps panel weight down while maintaining the rigidity needed to stay flat across a 19-inch span. A warped or flexing blank is a ventilation problem; the material choice here prevents that.
• Black Powder Coat Finish: Matches the interior finish of Middle Atlantic and most third-party rack enclosures. Powder coat is more durable than paint — it won't chip under repeated removal and reinstallation the way a painted surface will.
• Standard 19-Inch Rack Compatibility: Fits any EIA-standard 19-inch rack — Middle Atlantic, Belden, Chatsworth, Tripp Lite, APC, or open-frame racks that follow the EIA-310 standard. No adapter hardware required.
• 6-Pack Contractor Quantity: Sized for real project work. If you're racking out a head-end room, server closet, or security equipment bay, a single-panel order rarely covers the job. Six panels per pack reduces reordering friction and brings down per-unit cost.
• Flat Panel Design: The PHBL3-CP6 (often searched as PHBL3 CP6) uses a flat profile with no vents, louvres, or cutouts — correct choice when you want to block airflow between zones deliberately, or simply need a clean closed face on an unused bay.

Integration & Compatibility

These panels are designed for Middle Atlantic rack systems but mount in any standard 19-inch equipment rack following EIA-310-D spacing. They pair naturally with rack enclosures and cabinets across security, AV, and IT deployments. If you're building out a structured rack for a surveillance head-end — NVRs, PoE switches, UPS units — check our rack accessories category for cable management and shelving that completes the installation alongside these blanks. For guidance on rack planning and component layout, our rack planning guide covers slot allocation and airflow strategy.

What's in the Box

• 6x Middle Atlantic PHBL-3 3U Blank Rack Panels

Frequently Asked Questions

Q: What rack size does the PHBL3-CP6 fit?

A: The PHBL3-CP6 fits standard 19-inch EIA-310 equipment racks. It covers 3U (three rack units) of vertical space per panel.

Q: How many panels are included in the PHBL3-CP6?

A: Six panels are included. This is a contractor pack intended for project-quantity purchasing rather than single-panel orders.

Q: What material and finish are these blank panels?

A: Each panel is aluminum with a black powder coat finish — durable enough to handle repeated removal and reinstallation without chipping.

Q: Do these panels include mounting screws?

A: Mounting hardware is not listed in the verified package contents for the PHBL3-CP6. Standard rack screws (10-32 or M6 depending on your rack) are typically required and should be confirmed against your rack's fastener specification.

Q: Are these vented or solid panels?

A: Solid flat panels with no vents or louvres — correct for blocking airflow between rack zones or closing unused bays where open slots would disrupt front-to-back thermal management.

Karl Wilson

The PHBL3-CP6 is the kind of SKU that separates integrators who finish jobs cleanly from those who leave open rack slots because 'nobody sees the back of the rack.' The 3U aluminum panels — six per contractor pack — cover the most common gap sizes left after populating a surveillance head-end with 1U switches, 2U NVRs, and half-height UPS units. I specify these specifically because the powder coat finish holds up through a commissioning process where panels get pulled and reinstalled multiple times as cable routes get adjusted.

Technical Highlights:

• 3U per panel: Covers three rack units in a single piece — eliminating the visual and structural slop of stacking multiple 1U fillers to close a larger gap.
• Aluminum construction: Maintains flatness across the full 19-inch span without adding meaningful weight to the rack load — relevant when you're already carrying heavy NVR storage arrays.
• Flat, solid profile: No vents means deliberate airflow control — useful when you're separating a hot UPS bay from cooler network gear in the same enclosure.

Deployment Considerations:

• Mounting hardware is not included in the verified spec — confirm your rack's fastener standard (10-32 vs. M6) before the installation date so you're not sourcing screws on-site.
• At 5 pounds for six panels, the pack weight is minimal, but plan your rack slot allocation before installation: moving a 3U blank after surrounding gear is cabled in is more disruptive than it sounds.

This pack is the right call for a security integrator closing out a multi-rack surveillance head-end where slot gaps need to be filled before client handoff — the 6-pack quantity typically covers a fully populated 12U or 24U enclosure's remaining open bays in a single order.