Middle Atlantic MRK Series Rack, 40 RU, 36" D, Cage Nut w/o Rear Door

Designed to meet the demands of professional installers, the Middle Atlantic MRK Series Rack delivers rock-solid performance in a compact, space-saving package. With 40 rack units of mounting space and a substantial 36-inch depth, this enclosure is built to handle demanding multi-bay projects—from large AV systems and broadcast setups to data centers and network closets. The MRK line is renowned for rugged construction, seismic certification, and a modular approach that makes it a favorite among installing contractors who value reliability, ease of service, and a clean, scalable rack layout. The Cage Nut w/o Rear Door variant provides flexibility for installations that require open-back configurations or that plan to add rear-access options later, while maintaining the sturdy frame and dependable hardware Middle Atlantic is known for. When performance, longevity, and professional aesthetics matter most, MRK stands as a workhorse solution that streamlines workflows and delivers consistent results across complex installations.

• The MRK Series emphasizes a rugged, space-saving design that maximizes gear capacity without expanding the rack footprint, delivering 40U of mounting space in a single, durable enclosure ideal for crowded rooms and multi-bay configurations.
• Seismic certification and a high-load rating provide added safety and reliability in environments where movement or vibrations are a concern, making MRK racks suitable for data centers, broadcast facilities, and large control rooms that demand dependable containment.
• Cage Nut hardware is included for quick, straightforward installation of 19-inch equipment, and this variant ships without a rear door, offering flexibility for open-back setups or for future rear-door additions as site requirements evolve.
• MRK series compatibility ensures a scalable, modular approach to rack infrastructure, enabling contractors to align multiple bays with consistent dimensions, finishes, and mounting standards for a cohesive, professional facility design.
• Durable finishes and industry-standard rails support long-term use in demanding environments; a powder-coated steel chassis ensures resistance to wear, while 19-inch EIA-compliant mounting rails maintain precise alignment across equipment brands.

Technical Details of Middle Atlantic MRK Series Rack, 40 RU, 36" D, Cage Nut w/o Rear Door

• Rack Units (RU): 40U
• Depth: 36 inches
• Front rails: 19" EIA standard mounting rails compatible with most 19" equipment
• Rear door: Not included (Cage Nut configuration designed for flexible installation)
• Cage nuts: Included
• Construction: Heavy-gauge steel chassis with durable powder-coated finish
• Certification: Seismic-certified to meet industry standards for high-load installations
• Finish: Black powder coat for durability and professional appearance
• Applications: Ideal for large multi-bay installations, contractor-grade reliability, and environments requiring robust rack infrastructure

How to install Middle Atlantic MRK Series Rack

• Plan the location and verify floor load capacity and anchor points to support a 40U, 36" deep rack in your space.
• Unpack the MRK rack and inspect for shipping damage; confirm that cage nuts and mounting hardware are included as specified.
• Install the front mounting rails to the rack frame, ensuring they are level and aligned with the 19" equipment spacing standard.
• Secure rails using the appropriate hardware, then insert cage nuts at the mounting positions that correspond to your equipment’s width and orientation.
• Begin with the heaviest or deepest devices first, mounting them to the rails with standard 10-32 or manufacturer-recommended fasteners, keeping weight balanced for stability.
• Route power, data, and control cables through available cable-management features to maintain airflow and access for serviceability.
• If a rear door is added later, install it according to MRK guidelines and verify that latches operate smoothly and securely.
• Securely fasten all devices, perform a final cable-management pass, and conduct a functional check to ensure all equipment powers on and operates correctly.
• Document the rack configuration for maintenance and future expansions, maintaining consistent labeling and organization across all bays.

Frequently asked questions

• Q: What does 40 RU and 36" depth mean for this MRK rack?

  A: 40 rack units (40U) indicate the total vertical mounting space inside the rack, while 36" depth specifies the distance from the front to the rear of the enclosure. This combination supports a wide range of standard 19-inch equipment and is well-suited for multi-bay installations that require substantial gear capacity without a large footprint.

• Q: Is the rear door included with this cage nut configuration?

  A: No. This variant is designed as Cage Nut w/o Rear Door, offering open-back flexibility or the option to add a rear door later if needed for additional security or airflow control.

• Q: Is the MRK rack seismic-certified?

  A: Yes. MRK series enclosures are seismic-certified, making them a reliable choice for installations in regions where movement or vibration is a concern, and suitable for large, multi-bay projects.

• Q: What equipment fits in this rack?

  A: The rack is designed for standard 19-inch equipment that fits within 40U of mounting space. This includes servers, patch panels, AV processors, network gear, power distribution, and other rack-mountable devices commonly used in data centers, broadcast facilities, and control rooms.

• Q: How should I approach installation to ensure long-term performance?

  A: Start with careful planning of equipment order and weight distribution, install rails and cage nuts correctly, route cables to minimize tangling and airflow obstructions, and consider adding rear-door options or additional cable-management accessories as needed to maintain a clean, scalable rack system.

• Q: Can I customize the MRK rack for specific site requirements?

  A: Yes. The MRK series is designed for modular, scalable installations. You can tailor rear-door configurations, add cable-management accessories, and align multiple bays for a uniform, professional look across large facilities.