Middle Atlantic MRK-4431-DVR-AB – 44U/31D Configured DVR Rack with Add-A-Bay

Product Overview

The Middle Atlantic MRK-4431-DVR-AB is a 44-space pre-configured DVR rack system with 31" interior depth and factory-installed add-a-bay ganging hardware, designed for surveillance, security, and DVR-intensive AV installations that require expandable multi-bay enclosure systems. Built on the MRK Series fully welded steel platform, this pre-configured rack ships ready to accept DVR, NVR, and security appliances with front and rear adjustable 10-32 threaded rack rails, open front and rear ventilation doors, and a 20-amp power distribution strip. The included ganging hardware enables racks to be coupled together when fully loaded, making the MRK-4431-DVR-AB a consistent specification for security operations centers, government surveillance rooms, and large-scale multi-bay integrations.

Product Description

The MRK-4431-DVR-AB is factory configured for DVR and surveillance system deployments where deep equipment (31" interior depth) and expandable bay capacity are required. The fully welded construction and rugged steel frame are designed to handle the constant vibration and heat loads associated with 24/7 DVR and NVR appliance operation. Open ventilation doors on the front (64% open), rear (79% open split door), and top (64% open) provide passive airflow that supplements active cooling in equipment-dense installations.

Cable management is pre-installed and includes an LACE-OP lacer strip, 4 straight lacer bars, 2 offset lacer bars, and 12 Velcro straps for organized routing of power, video, and data cables throughout the enclosure. One each of 1-space and 2-space brush grommet panels are included for clean cable entry and exit points on the rack floor. Power distribution is handled by a 20-amp, 20-outlet corded power strip (PDT-2020C-NS), providing ample capacity for fully populated surveillance system racks. Front and rear 10-32 threaded rack rails with numbered rack spaces simplify equipment location and cable labeling during installation and service.

The add-a-bay design distinguishes the MRK-4431-DVR-AB from standard MRK configurations: ganging hardware is factory-included so that racks can be mechanically coupled together immediately upon installation when a DVR system expands to require additional bays. Leveling feet provide stability on uneven flooring and allow small adjustments for proper alignment between ganged units.

Key Features

• 44U Rack Capacity with 31" Interior Depth — Deep 31" interior accommodates large DVR, NVR, and security appliances without rear cable interference.
• Add-A-Bay / Ganging Hardware Included — Factory-included ganging hardware enables racks to be mechanically coupled when fully loaded, supporting expandable multi-bay DVR installations.
• Open Ventilation Doors — 64% open front door, 79% open split rear door, and 64% open top promote passive airflow for 24/7 DVR and appliance cooling.
• Front and Rear 10-32 Threaded Rails — Numbered rack spaces and adjustable 10-32 threaded rails on front and rear support accurate equipment positioning and cable labeling.
• Full Cable Management Package — LACE-OP lacer strip, 4 straight lacer bars, 2 offset lacer bars, and 12 Velcro straps provide organized cable routing for dense surveillance wiring.
• Brush Grommet Panels — Included 1-space and 2-space brush grommet panels provide clean cable entry and exit points at the rack floor.
• 20A / 20-Outlet Power Strip — Corded PDT-2020C-NS power strip with 20-amp, 20-outlet capacity handles fully populated DVR rack power demands.
• Fully Welded Steel Construction — Rugged welded frame handles constant vibration loads from 24/7 spinning disk DVR/NVR appliances without structural fatigue.
• Leveling Feet Included — Adjustable leveling feet stabilize the rack on uneven flooring and align adjacent units in multi-bay configurations.
• 100 Rack Screws Included — 100 qty 10-32 rack screws included for immediate equipment mounting without a separate hardware order.

Typical Applications

• Security operations centers and surveillance rooms
• Government and municipal security infrastructure
• Retail loss prevention DVR/NVR installations
• Corporate security and access control systems
• Campus-wide video surveillance deployments
• Healthcare facility security systems
• Multi-bay AV and security equipment rooms

Technical Specifications

Frequently Asked Questions

Q: What does "Add-A-Bay" mean on the MRK-4431-DVR-AB?

A: Add-A-Bay means the rack ships with ganging hardware factory-included, allowing the unit to be mechanically coupled to an adjacent MRK rack when fully loaded. This enables DVR and surveillance system racks to be expanded into multi-bay configurations without ordering separate ganging parts.

Q: Why is the MRK-4431-DVR-AB specifically configured for DVR systems?

A: The DVR configuration uses 31" interior depth to accommodate large DVR and NVR appliances, open ventilation doors on all sides to manage the heat output of 24/7 spinning disk systems, and brush grommet panels for clean cable entry at the floor of the rack where video and power cables typically enter from below.

Q: What ventilation is provided?

A: The front door is 64% open, the rear split door is 79% open, and the top is 64% open, providing substantial passive airflow through the enclosure. This design supports 24/7 DVR and NVR operation without requiring an active fan top in standard ambient temperature environments.

Q: What cable management is included?

A: The MRK-4431-DVR-AB includes an LACE-OP lacer strip, 4 straight lacer bars, 2 offset lacer bars, 12 Velcro straps, and 1-space and 2-space brush grommet panels for complete cable management at installation.

Q: Is the MRK-4431-DVR-AB seismically rated?

A: The MRK Series is known for high seismic load ratings. Contact Creation Networks at https://creationnetworks.net to confirm specific seismic certification requirements for your jurisdiction and whether MRK-Z4 seismic brackets apply to this configuration.

Q: What power distribution is included?

A: A 20-amp, 20-outlet corded power strip (PDT-2020C-NS) is factory-installed for immediate use.

Q: Where can I order the MRK-4431-DVR-AB or get a quote?

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