Middle Atlantic MRK-4431-AV – 44U/31D Pre-Configured AV Rack System

Product Overview

The Middle Atlantic MRK-4431-AV is a 44-space pre-configured AV rack system with 31" interior depth, factory-built on the MRK Series fully welded steel platform for commercial AV system deployment in boardrooms, equipment rooms, and large-scale multi-bay installations. Designed for AV integrators and systems contractors who need a production-ready rack with integrated thermal management, cable management, power distribution, and side panels, the MRK-4431-AV ships with an integrated fan top and proportional speed fan controller, solid front door, configurable rear door, 20-amp power strip, and a complete cable management package. The 31" deep interior accommodates audio amplifiers, video processors, and other large AV components without rear cable interference.

Product Description

The MRK-4431-AV provides 44U of rack space in a 31" deep fully welded steel enclosure, giving AV integrators the interior volume needed for large signal processing, amplification, and video distribution equipment common in permanent commercial AV systems. The enclosure uses standard front and rear adjustable 10-32 threaded rack rails with numbered rack spaces, allowing accurate equipment positioning and simplified cable labeling during installation and service calls.

Thermal management is an integrated part of the MRK-4431-AV configuration. The factory-installed fan top includes vent blockers to direct airflow, and the proportional speed fan controller modulates fan speed based on internal temperature to protect AV equipment while minimizing noise in occupied conference rooms and boardrooms. The configurable rear door and rear door vent work in concert with the fan top to establish a front-to-rear airflow path through the rack.

Cable management accessories ship fully installed: an LACE-OP lacer strip provides a full-height vertical cable management channel, 4 straight and 2 offset horizontal lacer bars organize horizontal cable runs, and 12 Velcro straps secure individual cable bundles at any point in the rack. Solid side panels ship installed, providing a finished appearance and protecting internal cabling from adjacent equipment interference in open equipment room environments. Power distribution is handled by a 20-amp, 20-outlet corded power strip (PDT-2020C-NS), and leveling feet provide floor stability and minor height adjustment for uneven surfaces. The racks also gang together when fully loaded, making the MRK-4431-AV suitable for multi-bay AV system rooms.

Key Features

• 44U Rack Capacity with 31" Interior Depth — 31" deep interior handles large AV components including amplifiers, video processors, and multi-port routing matrices without rear clearance issues.
• Integrated Fan Top with Proportional Speed Controller — Automatically adjusts fan speed based on internal temperature to protect equipment and minimize acoustic impact in occupied AV spaces.
• Vent Blockers Included — Factory-installed vent blockers direct airflow through the rack's equipment zone rather than allowing bypass air, improving cooling efficiency.
• Solid Front Door and Configurable Rear Door — Solid locking front door secures equipment from front access; configurable rear door with vent supports cable entry and rear airflow management.
• Front and Rear Adjustable 10-32 Threaded Rails — Numbered rack spaces and standard 10-32 threaded rails on both front and rear simplify equipment mounting and cable labeling.
• Full Cable Management Package — LACE-OP lacer strip, 4 straight and 2 offset lacer bars, and 12 Velcro straps provide organized routing for dense AV signal and power cabling.
• 20A / 20-Outlet Power Strip — Corded PDT-2020C-NS power strip with 20-amp, 20-outlet capacity provides ample power for fully populated AV racks.
• Solid Side Panels Installed — Factory-installed side panels give a finished enclosure appearance and protect internal cabling in open equipment room environments.
• Gangable When Fully Loaded — MRK racks can be coupled together when fully loaded for multi-bay AV equipment room installations.
• Fully Welded Steel Construction — Commercial-grade welded frame handles heavy AV equipment loads with consistent structural integrity.
• 100 Rack Screws and Leveling Feet Included — Complete hardware package enables immediate deployment without separate hardware sourcing.

Typical Applications

• Corporate boardrooms and conference rooms
• Dedicated AV equipment rooms and head-end closets
• Auditoriums and multipurpose AV system deployments
• Houses of worship with permanent AV installations
• Government and municipal AV infrastructure
• Higher education AV technology deployments
• Broadcast and production facility equipment racks
• Multi-bay AV systems requiring expandable rack configurations

Technical Specifications

Frequently Asked Questions

Q: What is included with the MRK-4431-AV out of the box?

A: The MRK-4431-AV ships pre-configured with an integrated fan top and proportional speed fan controller, vent blockers, configurable rear door with rear vent, solid front door, LACE-OP lacer strip, 4 straight and 2 offset lacer bars, 12 Velcro straps, a 20A/20-outlet corded power strip (PDT-2020C-NS), solid side panels, 4 leveling feet, and 100 qty 10-32 rack screws.

Q: How does the fan top proportional speed controller work?

A: The proportional speed fan controller monitors internal rack temperature and automatically increases or decreases fan speed as equipment heat load changes. This protects AV equipment during peak loads while reducing fan noise during lighter use, which is important in occupied boardrooms and conference rooms.

Q: What is the purpose of vent blockers in this rack?

A: Vent blockers seal unused rack spaces and openings in the fan top to prevent cooled air from bypassing equipment and exhausting directly out of the rack without absorbing heat. This improves the efficiency of the integrated fan top cooling system.

Q: Can multiple MRK-4431-AV racks be used side by side?

A: Yes. MRK racks can be ganged together when fully loaded for multi-bay AV equipment room configurations. Contact Creation Networks for guidance on multi-bay rack system design and whether ganging hardware should be ordered separately for your application.

Q: What is the difference between the MRK-4431-AV and the MRK-4426-AV?

A: The primary difference is interior depth. The MRK-4431-AV has 31" of interior depth vs. 26" on the MRK-4426-AV, making it better suited for deeper AV components such as large amplifiers, video processors, and multi-port routing switches that cannot fit in a 26" enclosure.

Q: Is the MRK-4431-AV seismically rated?

A: The MRK Series is designed with high seismic load ratings. Contact Creation Networks at https://creationnetworks.net to confirm specific seismic certification requirements for your jurisdiction and application.

Q: Where can I order the MRK-4431-AV or request a quote?

A: The MRK-4431-AV is available through Creation Networks. Visit https://creationnetworks.net or contact our team for pricing, lead times, and AV rack system design support.