Middle Atlantic 6SP Flat Anod.alum.blank - HBL6

Middle Atlantic HBL6 6U Blank Rack Panel — Anodized Aluminum, 19-Inch

Overview

The Middle Atlantic HBL6 is a 6-rack-unit flat blank panel designed to fill open bay space in standard 19-inch equipment racks. At just 0.08 inches deep, it sits nearly flush with adjacent gear, keeping your rack face clean and your airflow architecture intact. If you're building out a rack accessories deployment and have unused RU space between active components, the HBL6 is the mechanical answer — no creativity required.

Blank panels matter more than most integrators give them credit for. Open rack slots are direct bypass paths for hot exhaust air from switches, NVRs, and servers to recirculate back to inlet fans. Even in moderate-density racks, a few uncovered slots can measurably raise inlet temperatures. The HBL6 closes those gaps at negligible cost.

Key Features

• 6U Coverage at 19 Inches Wide: Spans six rack units (10.5 inches tall) across the full standard 19-inch panel width — the right block for filling the kind of multi-RU gap that appears when you drop a compact switch into a rack designed for a larger unit.
• Flat Profile (0.08 in Depth): At roughly 2mm of protrusion, the HBL6 sits essentially flush with the rack frame. No interference with cable management arms, no clearance issues with adjacent blanks or adjacent gear in tight enclosures.
• Black Brushed and Anodized Aluminum Finish: The anodized surface is durable, non-conductive, and visually consistent with Middle Atlantic rack systems. Brushed aluminum resists fingerprints and minor surface abrasion better than painted steel alternatives — relevant in field environments where panels get handled repeatedly during reconfigurations.
• Aluminum Construction: Lighter than steel blank panels of the same footprint. The HBL6 ships at 2.4 lbs — meaningful when you're loading a road-case or portable rack to weight limits for transport.
• 2 Mounting Points: Standard two-point rack-ear mounting compatible with square-hole and round-hole 19-inch rack rails. Installs and removes without tools in most rack configurations, making future slot reconfigurations fast.
• Single-Unit Pack: Ships as a single panel — useful for targeted gap-filling without over-ordering. Buy the quantity that matches your open slots rather than a bulk kit you won't use.

Integration & Compatibility

The HBL6 fits any EIA-standard 19-inch rack. It's a natural companion to network video recorders, managed PoE switches, and other rack-mount Middle Atlantic equipment where RU gaps appear between devices of different heights. It also pairs with rack-mount power strips and patch panels in structured wiring closets where mixed equipment heights are the norm.

For integrators spec'ing out a full rack build, reference a rack planning guide to account for blank panel quantity alongside active equipment RU counts — it's easy to under-order and end up with open slots post-installation.

What's in the Box

• 1x Middle Atlantic HBL6 6U Flat Blank Panel

Frequently Asked Questions

Q: What rack unit height does the HBL6 cover?

A: The HBL6 covers 6 rack units, which equals 10.5 inches of vertical rack space.

Q: What is the panel width — will it fit a standard 19-inch rack?

A: Yes. The HBL6 is 19 inches wide, which is the EIA standard for rack-mount equipment. It fits square-hole and round-hole 19-inch racks.

Q: How deep does the HBL6 protrude from the rack face?

A: Only 0.08 inches (about 2mm). It sits nearly flush with the rack frame and won't interfere with adjacent panels, cable management arms, or rear-mount gear.

Q: What material and finish is the HBL6?

A: It is constructed from aluminum with a black brushed and anodized finish — durable, non-conductive, and consistent with standard Middle Atlantic rack aesthetics.

Q: How many mounting points does the HBL6 use?

A: Two mounting points — standard rack-ear mounting compatible with most 19-inch rack rails.

Q: How many panels come in the package?

A: One panel per package. Order the quantity that matches the number of open slots in your rack.

Jerry Tildsen

The HBL6 is one of those components that doesn't get specified until a rack is half-built and someone notices three open slots between the NVR and the patch panel. At 0.08 inches deep and 6RU tall, it's a purpose-fit gap filler — not a compromise. The anodized aluminum finish holds up to repeated removal and reinstallation, which matters in any rack that gets reconfigured seasonally or as deployments expand.

Technical Highlights:

• 0.08-Inch Profile: At essentially flush depth, this panel doesn't add mechanical complexity at the rack face — no protruding edges to catch cables or snag fingers during adjacent equipment service.
• 10.5-Inch Height (6RU): Covers the exact gap left by a mix of 1U, 2U, and 4U devices in a standard 12U or 16U enclosure. One panel closes what would otherwise take three or four smaller blanks.
• Anodized Aluminum vs. Painted Steel: Anodizing bonds to the surface rather than coating it — no flaking, no rust risk in humid equipment rooms, and a consistent appearance alongside Middle Atlantic rack rails over time.

Deployment Considerations:

• The two-point mounting ear design means this installs and removes with a standard Phillips screwdriver — worth noting if you're working in locked rack enclosures with limited tool access, where a single-point panel can be awkward.
• At 2.4 lbs shipping weight, factor panel quantity into portable rack weight budgets — six or eight HBL6 panels add up quickly in a road case spec.

The HBL6 earns its place in any fixed-installation security rack where thermal management is taken seriously — specifically in server rooms and IDF closets where open RU gaps create recirculation paths that raise inlet temps on adjacent NVRs and network gear.