Middle Atlantic MRK-4042PROLRD – 40SP/42D MRK with PRO Rail and LRD
Middle Atlantic MRK-4042PROLRD – 40SP/42D MRK with PRO Rail and LRD is backordered and will ship as soon as it is back in stock.
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Middle Atlantic MRK-4042PROLRD – 40SP/42D MRK with PRO Rail and LRD
Product Overview
The Middle Atlantic MRK-4042PROLRD is a 40-space, 42-inch-deep multibay configured rack that combines Proliant-compatible rails with a lever-release door for efficient server integration and fast front-panel access. Part of Middle Atlantic's MRK series, it is engineered for ganged multi-bay deployments in data centers, broadcast facilities, and enterprise AV infrastructure. The combination of PRO rails and lever-release hardware reduces installation time and simplifies rack servicing in high-density environments.
Product Description
The MRK-4042PROLRD is built around a 40-space (40SP) vertical mounting height and a 42-inch depth, providing ample room for 1U and 2U rack-mount servers, networking equipment, AV processors, and cable management accessories. The factory-installed Proliant-compatible (PRO) rails allow direct mounting of HP ProLiant and similarly railed servers without additional hardware, reducing deployment labor. The lever-release door (LRD) mechanism provides quick one-hand door operation, eliminating the need for keys or tools during routine access while maintaining a secure closed position. As an MRK series product, this rack is designed to gang with adjacent MRK enclosures, creating a unified multi-bay installation with consistent aesthetics and structural integrity. The 42-inch depth accommodates full-length servers and the cable management runs needed for clean structured installations. Welded steel construction provides the frame rigidity required for loaded rack deployments. The MRK series supports standard EIA rack rail spacing, ensuring compatibility with virtually all 19-inch rackmount equipment. Installation hardware and mounting accessories from Middle Atlantic integrate directly with the MRK frame. This rack is well-suited for enterprise IT deployments, AV systems integrators, and facilities teams building out scalable infrastructure. Available at creationnetworks.net with the full Middle Atlantic MRK product family.
Key Features
- 40-space (40SP) height — Substantial vertical capacity for high-density server and AV builds.
- 42-inch depth — Fits full-length 1U/2U servers and complete cable management runs.
- Proliant-compatible (PRO) rails — Direct HP ProLiant server mounting without additional rail kits.
- Lever-release door (LRD) — One-hand, tool-free front access for faster servicing.
- Gangable MRK series design — Connects side-by-side with other MRK enclosures for unified multi-bay installations.
- Welded steel construction — Structural rigidity under full equipment loads.
- EIA-standard rail spacing — Compatible with all standard 19-inch rackmount equipment.
Typical Applications
- Enterprise server rooms with HP ProLiant deployments
- Multi-bay data center buildouts requiring ganged rack configurations
- Broadcast and production facilities with high-density 1U/2U equipment
- AV system integrators deploying scalable rack infrastructure
- IT departments managing equipment requiring frequent front-panel access
Technical Specifications
| Specification | Value |
|---|---|
| Rack Spaces | 40SP |
| Depth | 42 inches |
| Rail Type | Proliant-compatible (PRO) |
| Door Type | Lever-release door (LRD) |
| Configuration | Multibay gangable (MRK series) |
| Rail Spacing | EIA standard 19-inch |
| Construction | Welded steel |
| Series | Middle Atlantic MRK |
Frequently Asked Questions
- What does "PRO" rail mean on the MRK-4042PROLRD?
- PRO refers to Proliant-compatible rails, which allow direct mounting of HP ProLiant servers without purchasing or installing separate rail kits.
- What is a lever-release door (LRD)?
- The LRD is a door mechanism that releases with a single lever action, allowing tool-free one-hand access to the front of the rack. It latches securely when closed.
- Can this rack be ganged with other MRK enclosures?
- Yes. The MRK series is designed for ganged multi-bay installations. Adjacent MRK enclosures bolt together to form a unified assembly.
- Where can I purchase the MRK-4042PROLRD?
- Available at creationnetworks.net.
At Creartion Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.
- Most in-stock orders placed Monday-Friday ship within 24-48 hours. General restrictions apply; please see our full shipping policy here.
- We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.
Nationwide Audiovisual Services, Design, Installation & Support
Creation Networks is a trusted nationwide partner for complete audiovisual solutions — delivering expert AV system sales, professional design, programming, installation, and ongoing support to organizations across the United States.
From Microsoft Teams Rooms and enterprise video conferencing to LED video walls, live streaming production, and hybrid collaboration systems, we provide end-to-end AV integration using premium, certified technology from industry leaders including Crestron, Q-SYS, Shure, Extron, and Absen.
Whether you operate a single location or manage facilities nationwide, Creation Networks ensures your AV systems are designed for reliability, scalability, security, and long-term performance — helping your organization communicate more effectively and operate at peak efficiency.
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