Middle Atlantic MRK-4042LRD – 40SP/42D Multibay MRK with LRD

Product Overview

The Middle Atlantic MRK-4042LRD is a 40-space, 42-inch-deep multibay configured rack equipped with a lever-release door for fast, tool-free front access in high-traffic server and AV installations. As part of the MRK series, it is engineered for ganged multi-bay deployments and supports the deep equipment clearance required for full-length servers and AV infrastructure. The LRD mechanism eliminates key-and-lock door friction, making routine rack access significantly faster in busy equipment rooms.

Product Description

The MRK-4042LRD is built on a 40-space vertical frame with a 42-inch depth, providing sufficient space for full-length rack servers, high-density AV equipment, and the cable management required for organized structured installations. The lever-release door (LRD) allows single-hand, tool-free door operation, which is particularly valuable in data center aisles or machine rooms where technicians access racks frequently. The MRK series gangable design allows this enclosure to bolt side-by-side with other MRK racks, creating a multi-bay system with aligned panel faces and continuous structural support across the bay. Welded steel construction ensures frame rigidity under the static loads of a fully populated 40SP rack. EIA-standard 19-inch rail spacing maintains compatibility with all standard rackmount equipment regardless of manufacturer. The 42-inch depth supports both standard AV/IT rack equipment and the deeper 2-post or 4-post mounting configurations common in server deployments. Middle Atlantic PDUs, blanking panels, cable management, and vented shelves integrate directly with the MRK frame using standard mounting hardware. The MRK-4042LRD is appropriate for enterprise data centers, broadcast facilities, AV headend rooms, and any installation where frequent rack access is expected. Available at creationnetworks.net.

Key Features

• 40-space (40SP) height — Substantial vertical capacity for full server and AV system builds.
• 42-inch depth — Accommodates full-length servers and deep cable management runs.
• Lever-release door (LRD) — Single-hand, tool-free front access without keys.
• Gangable MRK series design — Bolts side-by-side with other MRK enclosures for multi-bay installations.
• Welded steel construction — Frame rigidity maintained under full load.
• EIA-standard 19-inch rail spacing — Universal 19-inch rack equipment compatibility.

Typical Applications

• Enterprise server rooms and data centers with high-frequency rack access needs
• Multi-bay installations using MRK series gangable enclosures
• Broadcast and production facilities housing full-length AV and IT equipment
• AV system integrators building 40SP high-density installations
• Machine rooms where tool-free door access improves service efficiency

Technical Specifications

Frequently Asked Questions

What does LRD mean?

LRD stands for lever-release door. It opens with a single lever action, requiring no key or tool, and latches securely when closed.

Does the MRK-4042LRD include Proliant-compatible rails?

No. This model does not include PRO rails. For Proliant-compatible rails with LRD, see the MRK-4042PROLRD.

Can this rack gang with MRK enclosures of different heights?

The MRK series is designed for ganging. Consult Middle Atlantic specifications for ganging enclosures with different SP heights.

Where can I purchase the MRK-4042LRD?

Available at creationnetworks.net.