Middle Atlantic 44SP/36D MRK W/proliant R - MRK-4436PRO

Middle Atlantic MRK-4436PRO 44U 36-Inch Deep Seismic-Rated AV Rack Frame

Overview

The Middle Atlantic MRK-4436PRO is a 44U floor-standing open-frame rack built for AV, security, and IT infrastructure deployments where load capacity, seismic compliance, and long-term serviceability are non-negotiable. At 36 inches of total depth with 33.6 inches usable, it comfortably swallows deep servers, NVR appliances, dense patch panels, and heavy UPS units without forcing cable compromises at the rear. The MRK-4436PRO ships as a frame-only configuration — no side panels — which keeps airflow open and makes it straightforward to install in open-air equipment rooms, IDF closets, or security operations centers where technicians need lateral access during commissioning and maintenance.

Manufactured in the USA and TAA-compliant, this rack is a direct fit for federal, state, and municipal projects subject to Buy American and Trade Agreements Act requirements. The ASCE 7-10 seismic load certification and UL-listed 2500 lb load capacity mean it qualifies for installations in seismic zones — a hard requirement for California, Pacific Northwest, and many government facility specs that reviewers won't waive.

Key Features

• 44 Rack Units / 77.13 in Usable Height: Forty-four U of usable space gives an integrator enough room to stack a full NVR stack, core switch, patch panel, KVM, and UPS in a single enclosure — reducing the footprint compared to splitting across two smaller racks. The 77.13-inch usable height (195.9 cm) accommodates full-height blanks without wasting a single U.
• 2,500 lb UL-Listed Load Capacity: The UL-listed 2,500 lb dynamic load rating (per ASCE 7-10 seismic standard) is the number your structural engineer and AHJ want to see on the submittal. It supports dense configurations of servers, NVRs, and battery backup units without qualification caveats.
• 10,000 lb Static Weight Capacity: The static weight capacity of 10,000 lbs (4,536 kg) is the ceiling for dead-load calculations — useful when specifying for raised-floor data rooms where floor load ratings are part of the permit package.
• 36-Inch Total Depth / 33.6-Inch Usable Depth: The 33.6-inch usable depth (85.3 cm) handles enterprise-class servers and NVR appliances that routinely run 28–32 inches deep. You won't need to angle-mount rear cable managers or fight the back rail on initial install.
• Cage Nut Rail System: Standard cage nut rails on a 19-inch (48.3 cm) panel width accept universal rack-mount equipment from any manufacturer — no proprietary rail kits, no adapter plates. Field servicing stays straightforward when equipment gets swapped mid-contract.
• Rear Door Included: The rear door provides physical security and cable management structure at the back of the frame — important in shared equipment rooms where incidental contact with rear-panel cabling is a real risk. No side panels means lateral airflow remains unobstructed for heat-generating loads.
• Gangable Design: The rack is gangable, allowing multiple MRK units to be bolted side-by-side in a row configuration. This is the right architecture for NOC builds, large security operations centers, or data rooms where adjacency and cable tray continuity matter.
• TAA Compliant / USA Manufactured: Federal Ops Country of Origin is USA and TAA compliance is verified — both conditions required on GSA Schedule orders and most federal/state government contracts. No sourcing documentation gymnastics at bid time.
• 22-Inch External Width: The 22-inch (55.9 cm) external width is the standard footprint for side-by-side rack rows. It fits standard equipment room floor grids and cable tray spacing without special accommodation.

Integration & Compatibility

The MRK-4436PRO (often searched as MRK 4436PRO) integrates into any standard 19-inch rack ecosystem. The cage nut rail pattern accepts EIA-310 compliant equipment from all major vendors — NVR appliances, managed PoE switches, patch panels, KVM drawers, and 2U/4U UPS units all mount without adapter hardware. The gangable frame design supports multi-rack rows with consistent depth and rail alignment, simplifying overhead cable tray routing. For security operations center builds, pair this rack with a structured rack accessory package — horizontal cable managers, blanking panels, and PDUs mount directly to the cage nut rails. Integrators deploying network video recorders and core switching in the same enclosure will find the 33.6-inch usable depth accommodates virtually all enterprise NVR and switching platforms without a depth extension kit. For broader context on designing rack infrastructure for surveillance deployments, review the security camera systems category. This rack is part of the Middle Atlantic rack and enclosure line, which includes companion side panels, doors, and mounting accessories designed to the same dimensional standards.

Frequently Asked Questions

Q: Is the MRK-4436PRO TAA compliant?

A: Yes. The MRK-4436PRO is TAA compliant and manufactured in the USA, making it eligible for GSA Schedule procurement and federal/state contracts subject to Trade Agreements Act requirements.

Q: What is the UL-listed load capacity of the MRK-4436PRO?

A: The MRK-4436PRO carries a UL-listed dynamic load capacity of 2,500 lbs (1,134 kg) per ASCE 7-10 seismic standards. The static weight capacity is 10,000 lbs (4,536 kg).

Q: Does this rack include side panels?

A: No. The MRK-4436PRO ships as a frame-only configuration with no side panels. A rear door is included. Side panels are available as separate accessories in the Middle Atlantic product line.

Q: What rail type does the MRK-4436PRO use?

A: It uses standard cage nut rails on a 19-inch panel width, compatible with EIA-310 rack-mount equipment from any manufacturer. No proprietary rail kits are required.

Q: Can multiple MRK-4436PRO racks be installed side by side?

A: Yes. The MRK-4436PRO is gangable, meaning multiple units can be bolted together in a row configuration. The 22-inch external width fits standard equipment room floor grids.

Q: Is the MRK-4436PRO seismic certified?

A: Yes. It is UL-listed for seismic load capacity per ASCE 7-10, which is the certification required by most seismic zone jurisdictions and government facility specifications.