Middle Atlantic 50PC. EB1 Master Pack - EB1MP

Middle Atlantic EB1MP 1U Flanged Blank Rack Panel — 50-Pack

Overview

The Middle Atlantic EB1MP is a 1U (1.75 in) flanged steel blank panel supplied in a 50-unit master pack — the practical unit of measure when you're building out a rack room and need consistent gap coverage across multiple enclosures. At 19 inches wide and only 0.52 inches deep, the EB1MP fills open rack slots without consuming usable depth, keeping airflow paths unobstructed and the front face clean. The flat black powder coat finish matches the standard Middle Atlantic rack aesthetic, so mixed-density builds don't produce the mismatched panel look that signals a rushed installation. For integrators stocking a rack fabrication bench or a structured-cabling closet, buying the EB1MP master pack eliminates the constant reorder cycle on single-panel quantities.

Key Features

• 1U Form Factor (1.75 in tall): Fills exactly one rack unit per panel — no cutting, no shimming. When you're closing out a 42U rack with 12 empty slots after equipment placement, you know precisely how many panels you need and they all sit flush.
• Flanged Style: The flanged edge provides positive registration against the rack rail, preventing the panel from walking forward under vibration or repeated adjacent-device insertions. This matters in mobile rack deployments (touring AV, temporary command posts) where panels can work loose.
• 19-Inch Standard Width: Fits any EIA-310 compliant 19-inch rack — open-frame, enclosed two-post, or four-post. No adapter required for standard Middle Atlantic, Legrand, Chatsworth, or third-party frames.
• Steel Construction with Flat Black Powder Coat: Steel (not aluminum or plastic) means the panel won't flex or crack when rack neighbors are tightened down hard. The powder coat provides a consistent matte finish that holds up against repeated contact without chipping the way painted finishes do.
• 0.52-Inch Depth: At just over half an inch, the panel doesn't intrude into cable management channels behind the rack rail. In tight enclosures with rear-mounted cable trays or PDU brackets, that clearance matters.
• 2 Mounting Points: Two-point mounting is standard for 1U panels — one screw per rail side. The flanged design keeps the panel stable at two points without racking or twisting even when the adjacent rail holes aren't perfectly aligned.
• 50-Unit Master Pack: A single EB1MP order covers a multi-rack deployment without piecemeal reordering. For a 10-rack security operations build where each rack averages 5 blank slots, one master pack handles the full job with panels left over for adds/moves.

Integration & Compatibility

The EB1MP is compatible with any standard 19-inch EIA-310 rack enclosure. It slots directly into Middle Atlantic rack systems including the ERK, WRK, and DWR series enclosures, as well as third-party open-frame and enclosed racks from other manufacturers that follow the 19-inch EIA standard. The flat black powder coat matches the finish on Middle Atlantic's Middle Atlantic rack and enclosure line, keeping panel aesthetics consistent across mixed-density builds.

For integrators sourcing a complete rack infrastructure solution, blank panels are typically ordered alongside rack accessories such as cable management panels, brush strips, and horizontal managers. In camera and access control deployments, the EB1MP closes unused slots in NVR enclosures and network equipment racks, maintaining the controlled airflow that thermal management guidelines require. Consult a rack planning and capacity guide when laying out a multi-rack system to determine blank panel quantities before fabrication begins.

What's in the Box

• 50x Middle Atlantic EB1MP 1U Flanged Steel Blank Rack Panels

Frequently Asked Questions

Q: What rack unit size is the EB1MP, and will it fill a standard 1U gap?

A: Yes. The EB1MP is exactly 1U tall (1.75 inches / 4.4 cm) and 19 inches wide (48.3 cm), fitting any standard EIA-310 19-inch rack opening. It uses two mounting points — one per rail side — for secure, flush installation.

Q: How deep does the EB1MP extend into the rack?

A: Only 0.52 inches (1.3 cm). This minimal depth keeps the panel clear of rear cable management hardware, PDU brackets, and airflow paths in most enclosed rack configurations.

Q: What finish does the EB1MP use, and will it match Middle Atlantic rack systems?

A: Flat black powder coat — the standard finish across the Middle Atlantic rack enclosure line. It provides a consistent matte appearance and is more durable than painted finishes under repeated contact.

Q: Is the EB1MP compatible with third-party rack enclosures, or only Middle Atlantic frames?

A: Any EIA-310 compliant 19-inch rack will accept the EB1MP, including Chatsworth, Belden, Middle Atlantic, Legrand, and most other commercial-grade enclosures. The standard 19-inch width and 1U height are universal to the EIA-310 spec.

Q: Why buy the 50-pack instead of single panels?

A: For multi-rack deployments — security operations centers, server rooms, AV systems — individual panel reorders are inefficient. A 50-unit master pack covers a full rack build or the blank-panel needs of a 5–10 rack deployment in a single order.

Q: What is the material of the EB1MP panel?

A: Steel with a flat black powder coat finish. Steel provides rigidity that prevents flexing or cracking under the clamping force of adjacent equipment, unlike aluminum or plastic panel alternatives.

Marty Allison

The EB1MP is the kind of part that only gets noticed when it's missing — but when you're closing out a 20-rack security installation and need 50 blanks on hand, ordering a master pack is the only approach that doesn't stall commissioning. At 0.52 inches deep and exactly 1.75 inches tall, this panel fits flush without interference, and the flanged edge keeps it registered against the rail even in environments where rack doors get opened and closed repeatedly.

Technical Highlights:

• Steel Construction: Unlike plastic or thin aluminum alternatives, the steel body resists flex when adjacent 1U devices exert side pressure during installation — important in high-density racks where equipment is packed tightly and tightening one unit can stress its neighbors.
• 0.52-Inch Depth: Leaves rear cable management and PDU mounting positions unobstructed. In enclosures with rear-mounted horizontal managers, this clearance is the difference between a clean installation and a panel that fouls the tray.
• 50-Unit Pack Quantity: At 39 lbs shipping weight for the full master pack, this isn't a grab-bag — it's project-quantity stock. A single order covers a 10-rack build averaging 5 open slots each, with units left for field service calls.

Deployment Considerations:

• The two-point flanged mount is sufficient for 1U at standard rack-rail torque specs. Do not over-torque — steel panels at 1U height don't need high clamping force and stripped rack rail threads are a commissioning headache.
• Flat black powder coat matches Middle Atlantic rack aesthetics exactly, but if your enclosures are a different vendor's finish (brushed aluminum, gray), confirm visual consistency expectations with the end client before the rack build — mixed finishes are a common punch-list item on formal rack audits.

The EB1MP master pack is the right procurement unit for security integrators building out multi-rack NVR rooms, access control head-end enclosures, or SOC infrastructure where consistent rack aesthetics and proper slot coverage are part of the project close-out checklist.