Middle Atlantic 28W/40SP Plexi Front Door - PFD28-40

Middle Atlantic PFD28-40 40U Plexiglass Front Door for SR28 Series Racks

Overview

The Middle Atlantic PFD28-40 is a 40U plexiglass front door purpose-built for SR28 series racks — the straightforward answer when you need physical access control and visual equipment status checks without pulling a full steel panel. At 28 inches wide and 70.9 inches tall, it spans the full front face of a 40U SR28 rack while the clear plexiglass lets technicians visually verify indicator lights, cable routing, and equipment state without opening the cabinet. If you're managing rack enclosure accessories across a security operations center, data closet, or AV head-end, the PFD28-40 (often searched as PFD28 40) eliminates the guesswork of what's running behind a closed door.

This door is part of the Middle Atlantic rack systems line, manufactured under the Legrand Group umbrella — a vendor with deep roots in structured cabling and rack infrastructure for commercial installations.

Key Features

• 40U Coverage at 28" Width: The door measures 25.4 x 70.9 x 1.39 inches (W x H x D), matching the exact front face of a 40U SR28-series rack. That precise fitment means no gaps at the edges, no improvised sealing, and a finished look that matters in client-facing server rooms and security NOCs.
• Plexiglass Construction: Clear acrylic lets you read LED status indicators, confirm cable connections, and spot failing hardware at a glance without cracking the door open. In environments where minimizing rack intrusions matters — air-pressurized server rooms, dusty warehouse IT closets — visual inspection through a closed door reduces unnecessary access events.
• Black Finish: The black frame and door body integrate cleanly with the SR28 rack system's standard color scheme. Consistent aesthetics matter in professionally installed AV and security racks where the finished product is part of the deliverable.
• Front-Mounting Configuration: Designed specifically for front installation on SR28 series enclosures. This is a front door replacement or add-on — not a rear door, side panel, or universal fit. Confirm your SR28 variant before ordering; rear-access requirements need a separate panel.
• SR28 Series Compatibility: The PFD28-40 is engineered exclusively for Middle Atlantic SR28 series racks. If your installation uses a different Middle Atlantic frame series or a third-party rack, this door will not fit — rack door fitment is frame-specific, not universal across the product line.
• Minimal Depth Profile at 1.39": At under 1.4 inches of added depth, the door doesn't meaningfully extend the rack footprint into tight wall niches or equipment rooms where clearance is constrained. That's relevant in retrofit installations where a few inches between the rack face and a cable tray or wall obstruction determines whether the door can swing open fully.

Integration & Compatibility

The PFD28-40 integrates directly with Middle Atlantic SR28 series rack enclosures — this is the compatibility constraint that matters most. Middle Atlantic's SR28 line is a widely deployed rack frame in commercial AV, security, and IT closet installations, which makes this door a common replacement and upgrade part for existing SR28 deployments. If you're speccing a new rack build, pair the SR28 frame with this door at the outset to avoid ordering a mismatched panel after installation.

For integrators managing multi-rack deployments in network rack cabinets or security equipment rooms, the plexiglass door is often the right call over a solid steel panel when the operations team needs regular visual status checks without physical access — reducing door cycles and the associated wear on hinges and latching hardware over time. Consult a rack planning guide to confirm depth clearances and door-swing clearance before finalizing placement in tight equipment rooms.

Frequently Asked Questions

Q: What rack series is the PFD28-40 compatible with?

A: The PFD28-40 is designed exclusively for Middle Atlantic SR28 series racks. It is not a universal fit and will not mount correctly on other Middle Atlantic frame series or third-party rack enclosures.

Q: What are the exact dimensions of the PFD28-40?

A: The door measures 25.4 inches wide, 70.9 inches tall, and 1.39 inches deep (W x H x D). It covers the full front face of a 40U SR28 rack.

Q: Is the PFD28-40 a front door or rear door?

A: It is a front-mount door only. If you need rear access coverage for your SR28 rack, a separate rear door panel is required.

Q: What material is the door panel made from?

A: The door is constructed from plexiglass (clear acrylic) in a black frame, allowing visual inspection of rack equipment without opening the door.

Q: What rack height does the PFD28-40 accommodate?

A: It is sized for 40U racks in the SR28 series. If your SR28 rack is a different height (e.g., 24U or 32U), you will need the corresponding PFD model for that U-height.

Q: Who manufactures the PFD28-40?

A: The PFD28-40 is manufactured by Middle Atlantic, which operates under the Legrand Group.

James Everett

The PFD28-40 comes up regularly on SR28-based security and AV rack builds where the ops team insists on visual equipment checks without physical access — the 70.9-inch clear plexiglass panel spans the entire 40U front face, so a technician can sweep the rack for alarm indicators in under five seconds without touching a latch. It's a small operational detail that adds up fast in high-access environments.

Technical Highlights:

• Full 40U Coverage: At 25.4 x 70.9 inches, the door covers the complete front face of a 40U SR28 rack with no gap at the top or bottom — partial-coverage doors create blind spots that defeat the point of a clear panel.
• 1.39" Depth Profile: The shallow door depth keeps the total rack footprint predictable. In equipment rooms where racks are positioned close to cable trays or wall structures, 1.39 inches of added projection is unlikely to create a swing-clearance conflict — but always verify against your specific room layout before finalizing rack placement.
• SR28-Specific Fitment: Middle Atlantic designs these doors to the SR28 frame dimensions, not as universal panels. The dimensional precision (25.4" W) means the mounting hardware aligns without shimming or modification — a real time-saver on multi-rack deployments where every install step is repeated across a row.

Deployment Considerations:

• Confirm the SR28 U-height before ordering — the PFD series has model variants for different rack heights, and the PFD28-40 is specifically a 40U door. Ordering a mismatched U-height is the most common fitment mistake on this product family.
• Plexiglass panels scratch more readily than steel and can craze over time in environments with chemical cleaning agents. In industrial or warehouse rack deployments with regular spray-down cleaning, factor in periodic panel replacement or use appropriate non-abrasive cleaners.

The PFD28-40 is the right specification for security NOC and AV head-end installations where SR28 racks are already deployed and the operations team needs visual equipment access without recurring door cycles — it eliminates a daily friction point without any infrastructure change beyond the door swap itself.