Middle Atlantic MRK Series Rack, 40RU, 42" Deep, w/o Rear Door

The MRK Series represents Middle Atlantic’s rugged, high-capacity enclosure solution built to perform on demanding AV and IT installations. When space is at a premium and reliability is non-negotiable, the MRK-40RU-42" rack delivers a robust, space-saving footprint that thrives on multi-bay projects and large-scale deployments. Designed with contractors in mind, this 40 rack-unit (RU) enclosure combines a compact exterior with expansive internal room, giving you the flexibility to mount, organize, and protect your valuable equipment while maintaining clean cable management and optimal airflow. Though listed as w/o rear door, the MRK Series is built to accommodate rear-access options and accessories, offering a scalable path from installation to expansion without compromising structural integrity or ease of service.

• Rugged, space-saving design for demanding multi-bay installations: The MRK Series is engineered to maximize floor space without sacrificing capacity or accessibility. Its sturdy frame supports dense equipment layouts, enabling multi-bay configurations that streamline installation across data centers, control rooms, or broadcast environments.
• 40 RU capacity with a generous 42" depth: This enclosure provides ample vertical and depth clearance for full-size 19" equipment, patch panels, power distribution, and cable management arms. Deep racks like this are ideal for servers, audio-visual gear, network switches, UPS units, and large LCD/LED stages of gear that require more room behind front-mounted equipment.
• Seismic certification and high load rating: The MRK Series is designed to meet stringent seismic requirements, giving installers confidence in stability and safety for elevated or earthquake-prone environments. A high seismic load rating translates to reliable performance under dynamic conditions, making it a trusted choice for commercial facilities and institutions.
• Flexible configuration with accessories for future growth: While this model ships without a rear door, it is compatible with rear-door kits and other MRK accessories to tailor the enclosure to evolving needs. The modular design supports accessory rails, ventilation solutions, cable management systems, and mounting rails that can be adjusted as gear changes occur, ensuring long-term value.
• Trusted build quality from Middle Atlantic: As a staple in professional AV and IT installations, Middle Atlantic enclosures are known for durable steel construction, clean powder-coated finishes, precise tolerances, and thoughtful interior layouts that simplify installation and service while preserving appearance and performance over time.

Technical Details of Middle Atlantic MRK Series Rack, 40 RU, 42"D, w/o Rear Door

• Get this information from the "specifications" section of the product from https://ec.synnex.com/ using product "UPC" or "SKU" as reference

how to install Middle Atlantic MRK Series Rack, 40 RU, 42" Deep, w/o Rear Door

Installing the MRK Series enclosure is a straightforward process designed to minimize site time while ensuring secure mounting for heavy equipment. Follow these general steps to achieve a clean, code-compliant installation:

1) Plan and prepare: Confirm the installation location, ensuring the floor or wall area can support the weight of fully loaded equipment. Verify access for front and side panels, ventilation, and cable management pathways. Consider future expansion when laying out equipment order and rack occupancy.

2) Assemble and place the rack: With the MRK rack upright, attach any required base or stabilization hardware per the manufacturer’s guidelines. If mounting to a base or rack cabinet system, align the frame precisely to prevent skew or misalignment that could impede door operation or rail mounting.

3) Install mounting rails: Attach 19" rack rails to the sides of the enclosure at the appropriate heights for your equipment. Ensure rails are level and securely fastened to support the cumulative weight of all devices. Use proper hardware and spacers as specified for rail depth and equipment depth compatibility.

4) Wire management and ventilation planning: Install any cable management arms, finger ducts, and perforated panels as needed to promote clean cable routing and adequate airflow. Plan power distribution and cooling paths to prevent heat buildup and ease serviceability.

5) Load equipment and balance weight: Mount servers, switches, patch panels, and power strips with balanced weight distribution to maintain rack stability. Follow standard 19" mounting practices, tighten hardware to the specified torque, and avoid over-tightening to prevent rail or chassis damage.

6) Final checks and service access: Verify that all equipment is securely fastened, doors (where applicable) operate smoothly, and cable bundles are neatly organized with clear pathways for maintenance. If you added a rear-door accessory later, confirm latch alignment and clearance for rear-facing equipment or cables.

7) Compliance and labeling: Document the rack configuration, including device labeling, cable color-coding, and weight distribution notes. Ensure the installation meets local codes and any seismic requirements applicable to your facility.

Frequently asked questions

• Q: Is this MRK rack shipped with a rear door? A: No. This model is specified as w/o rear door. A rear-door accessory is available separately for added rear access and cable management options.
• Q: What kind of equipment fits in the MRK Series rack? A: The MRK Series supports standard 19" equipment with a total of 40 RU. Its 42" depth is ideal for deep servers, large switches, audio-visual processors, patch panels, and related gear that requires extra depth for proper ventilation and cable routing.
• Q: Does the rack meet seismic certification? A: Yes. The MRK Series is designed to deliver seismic-certified performance, providing stability and compliance on large multi-bay installations and in environments subject to movement or vibration.
• Q: Can I customize the MRK rack with accessories? A: Absolutely. The MRK line is designed for modular upgrades—accessory rails, cable management, ventilation options, and doors can be added to suit evolving infrastructure needs while preserving structural integrity.
• Q: What installation considerations should I keep in mind? A: Plan for weight distribution, airflow, and ease of service. Ensure proper anchoring if required by building codes, confirm dimensions align with your equipment, and allow space for future growth and door access if you intend to add rear or front doors later.