Middle Atlantic MRK Series 44RU Open-Frame AV Rack with Back Door - 42in Depth, 22in Width

The MRK Series 44RU Open-Frame AV Rack with Back Door is built for performance under pressure. When projects demand a dependable enclosure that can weather the rigors of on-site installation, long-term use, and multi-bay deployments, this rack rises to the challenge. With a generous 42-inch depth and a compact 22-inch width, it accommodates deep components, power distribution, and extensive cabling while preserving a tidy, accessible workspace for technicians. The open-frame design enhances airflow to keep critical equipment cool, while the back door simplifies rear cable management and service access. Seismic certification adds an extra layer of security for installations in areas with structural concerns, giving contractors confidence that the rack will perform in demanding environments. In short, the MRK 44RU rack is a workhorse that blends rugged construction, thoughtful design, and scalable capacity for today’s sophisticated AV systems.

• Rugged open-frame design for optimal airflow and cooling. The open frame reduces heat buildup and supports reliable performance for racks filled with video processors, scalers, amplifiers, and large power management solutions.
• Back Door for streamlined cable management. A sturdy, removable back door provides easy rear access to cables and devices, simplifying maintenance, upgrades, and reconfiguration without compromising security.
• Generous depth and height for versatile configurations. With a 42" depth and 44RU height, this rack accommodates deep equipment, multi-slot patch panels, and long power strips while maximizing usable space.
• Built to withstand demanding job sites. Crafted from heavy-gauge steel with a durable powder-coated finish, the MRK rack is designed to endure transport, installation wear, and routine adjustments on large projects.
• Seismic-certified for safe multi-bay installations. The MRK Series carries seismic certification, delivering assurance on safety and compliance when mounting on walls or in multi-rack configurations in commercial environments.

Technical Details of Middle Atlantic MRK Series 44RU Open-Frame AV Rack

• Model: MRK Series 44RU Open-Frame AV Rack with Back Door
• Depth: 42 inches
• Width: 22 inches
• Height (RU): 44 Rack Units (44RU)
• Construction: Heavy-gauge steel with durable powder-coated finish for longevity and scratch resistance
• Mounting rails: Standard 19-inch rack rails with adjustable front and rear mounting positions to accommodate a wide range of equipment
• Ventilation: Open-frame design promotes robust airflow around installed gear
• Access: Back door for secure rear access and simplified cable management
• Seismic rating: Seismically certified to support high-load, multi-bay installations

How to Install Middle Atlantic MRK Series 44RU Open-Frame AV Rack

• Plan your layout by confirming equipment dimensions, rear clearance, and airflow needs; identify cable routes and power distribution requirements before loading.
• Position the MRK rack on a stable, level surface in the designated area; use leveling feet or mounting hardware as required to meet local codes and project specs.
• Install the 19" mounting rails first, ensuring both front and rear rails are aligned and securely fastened; verify that rails are spaced correctly for the specific devices you plan to mount.
• Begin loading equipment from the bottom up to maintain center of gravity and stability; alternate heavier components with lighter devices and spread power supplies to balance weight distribution.
• Route all cables through rear openings and the back door, using appropriate cable management accessories to keep runs neat and accessible for maintenance; avoid over-tightening to prevent strain on connectors.
• Install any required power distribution units, UPS, and patch panels, ensuring adequate clearance for ventilation and service access; label cables for quick identification during future upgrades.
• Close the back door and test door operation to ensure a full range of motion without contacting cables or equipment; verify that cooling remains effective during simulated load tests.
• If required by project specifications, secure the rack to the floor or wall per local codes and seismic requirements to maximize stability in high-vibration environments.
• Perform a final check of alignment, airflow, and cable management; plan a routine inspection schedule to maintain performance over time.

Frequently asked questions

• Q: How many RU does this rack provide? A: It provides 44 Rack Units (44RU) of mounting space.
• Q: What are the external dimensions? A: The rack is 42 inches deep and 22 inches wide, with a height suitable for 44RU configurations.
• Q: Is the MRK Series seismically certified? A: Yes, the MRK Series is seismic-certified to support safe, code-compliant installations in appropriate regions and multi-bay setups.
• Q: Does the rack include a back door? A: Yes, this model features a back door to facilitate rear access and cable management.
• Q: Is it suitable for deep or large equipment? A: Absolutely. The 42" depth accommodates deeper devices, power distribution units, and multi-slot panels while maintaining accessible service space.
• Q: Can I customize the rails or add accessories? A: The MRK Series uses standard 19" mounting rails and is compatible with common accessories and components designed for 19" rack installations, allowing flexible customization for future upgrades.