Middle Atlantic MRK-4431-AV-AB – 44SP 31D AV Rack Add-a-Bay

Product Overview

The Middle Atlantic MRK-4431-AV-AB is a 44-space, 31-inch deep AV rack Add-a-Bay unit designed to expand an existing Middle Atlantic MRK Series rack installation. It gangable side-by-side attachment means additional rack capacity without consuming a separate floor footprint, making it well-suited for AV control rooms, broadcast facilities, and integrated rack systems where space efficiency is critical.

Product Description

The MRK-4431-AV-AB adds 44 rack spaces of fully usable equipment capacity to an existing MRK Series AV rack. Because Add-a-Bay units attach directly to the primary rack frame, they share the structural and thermal footprint of the host rack rather than standing independently. This approach is preferred in installations where floor space is limited and the rack system needs to grow incrementally without disrupting previously installed equipment.

With 31 inches of internal depth, this Add-a-Bay accommodates deep AV processors, amplifiers, video matrices, and other full-depth equipment common in professional AV deployments. The rack uses standard 19-inch EIA mounting rails with 5/8-inch spacing, compatible with the full range of Middle Atlantic and industry-standard rackmount components. Front and rear access is maintained to support cabling, airflow management, and equipment servicing during and after installation.

The MRK Series design language matches across units, so gangable expansion maintains a consistent, professional appearance in client-facing machine rooms and equipment closets. The unit ships as a kit requiring assembly and attachment to the host rack, which is documented in detail in the included installation guide. It is intended for indoor, controlled-environment use by professional AV integrators and systems installers.

Key Features

• 44 Rack Spaces (44SP) — Substantial additional equipment capacity without a separate rack enclosure.
• 31-Inch Internal Depth — Accommodates deep AV and IT equipment including full-depth amplifiers and processors.
• Gangable Add-a-Bay Design — Attaches directly to an existing MRK Series rack to expand the system in place.
• Standard 19-Inch EIA Rails — Compatible with all standard rackmount equipment and accessories.
• 5/8-Inch Rail Spacing — Industry-standard spacing for universal component compatibility.
• Space-Efficient Expansion — Shares floor footprint with the primary rack rather than requiring a new rack position.
• Consistent MRK Series Aesthetic — Matches the appearance of the host rack for a unified system presentation.
• Front and Rear Access — Supports cable management and equipment servicing from both sides.

Typical Applications

• AV system expansions in broadcast control rooms and production facilities
• Corporate AV equipment rooms requiring incremental rack capacity growth
• Government and education AV infrastructure where rack footprint is fixed
• Professional AV integration projects using MRK Series as the primary rack platform
• Data centers and IT closets with existing Middle Atlantic rack deployments

Technical Specifications

Frequently Asked Questions

Q: What rack does the MRK-4431-AV-AB attach to?

A: It is designed to gang to an existing Middle Atlantic MRK Series AV rack. It is not a standalone unit and requires a primary MRK rack as the host.

Q: Does this unit include its own casters or leveling feet?

A: The Add-a-Bay unit is designed to attach to and be supported by the primary rack frame. Refer to the installation guide for hardware details specific to your host rack model.

Q: Can it be installed without disrupting equipment already in the primary rack?

A: Yes. The gangable design allows the Add-a-Bay to be attached to the side of an existing rack without requiring removal of installed equipment in the primary unit.

Q: Is 31 inches of depth sufficient for standard AV equipment?

A: Yes. Most professional AV processors, amplifiers, and video matrices are 28 inches or less in depth, fitting comfortably in a 31-inch bay with room for rear cable management.

Q: How many rack spaces does 44SP provide in practical terms?

A: 44 rack units (RU) is equivalent to approximately 77 inches of usable mounting height — enough for a full complement of AV source devices, DSPs, amplifiers, and power management equipment.

Q: Is this product available through Creation Networks?

A: Yes. Contact creationnetworks.net for pricing, availability, and configuration assistance.