Middle Atlantic MRK-4436LRD – 44U 36in Deep Multibay Rack, Less Rear Door

Product Overview

The Middle Atlantic MRK-4436LRD is a 44-space, 36-inch deep, 22-inch wide MRK Series equipment rack supplied without a rear door, designed for multibay rack row installation in commercial AV and IT environments. Integrators specify the less-rear-door configuration when racks are ganged side by side into continuous rows or positioned for open rear-aisle service access. With its extended 36-inch usable depth, this enclosure handles deep AV matrix switchers, servers, and large UPS systems that shallower racks cannot. It is a standard choice for equipment room buildouts in corporate, broadcast, and government commercial deployment projects.

Product Description

The MRK-4436LRD belongs to Middle Atlantic's MRK Series of 22-inch wide floor-standing racks, a platform widely used by installing contractors for structured AV integration work. Its 44 rack spaces provide high vertical capacity for amplifiers, DSP processors, video distribution gear, and network equipment in a single footprint. The 36-inch depth is the practical workhorse dimension of the MRK line, accommodating long-chassis electronics together with rear cable dressing and power distribution. Because the unit ships less rear door, adjacent MRK racks can be joined into unified multibay rows, or technicians can service connections from an open rear aisle without removing hardware. The welded steel frame maintains squareness under full equipment loading, which prevents rail deflection that can bind sliding shelves and drawer hardware. Front and rear rackrails use 10-32 tapped threads on EIA-310 standard spacing, so the rack accepts the full range of industry rack-mount hardware without cage nuts. Open top and bottom entry points support flexible cable management routing for structured cabling and power feeds during installation. The rack also accepts the broader Middle Atlantic accessory ecosystem, including side panels, top options, fan tops, and vertical cable management, allowing each bay in a row to be configured for its specific equipment load. For project pricing or configuration help, browse the full line at Middle Atlantic racks at Creation Networks.

Key Features

• 44 Rack Spaces — High-density vertical capacity consolidates AV and IT equipment into one floor-standing footprint.
• 36-Inch Usable Depth — Houses deep servers, matrix switchers, and UPS units with room for rear cable dressing.
• Less Rear Door (LRD) — Ships without a rear door for ganged multibay rows or open rear-aisle service access.
• Multibay Gangable Design — Joins side by side with other MRK racks to form continuous, unified rack rows.
• 22-Inch Wide MRK Platform — Extra interior width eases cable management and airflow around installed equipment.
• Welded Steel Construction — Frame stays square under full load, protecting slide hardware and rail alignment.
• 10-32 Tapped Rackrails — EIA-310 standard spacing accepts industry rack-mount hardware without cage nuts.
• Open Cable Entry — Top and bottom access points simplify structured cabling during installation.

Typical Applications

• Broadcast studio equipment rooms with ganged rack rows
• Government space AV and network head-end installations
• Auditorium and performance venue rack rooms
• House of worship amplifier and DSP racks
• Commercial meeting space centralized AV equipment closets

Technical Specifications

Frequently Asked Questions

Why would I choose the less-rear-door (LRD) version?

The LRD configuration is intended for multibay rows where racks gang together, or for equipment rooms with a dedicated rear service aisle where a rear door would add cost without benefit.

Is the MRK-4436LRD compatible with standard 19-inch equipment?

Yes. The rackrails follow EIA-310 standard spacing with 10-32 tapped threads, so any standard 19-inch rack-mount equipment and hardware installs directly.

Can I gang multiple MRK racks together?

Yes. The MRK Series multibay design allows adjacent racks to be joined side by side into continuous rack rows; the quantity is limited only by room layout.

Will deep servers and AV switchers fit?

The 36-inch usable depth accommodates long-chassis servers, large matrix switchers, and UPS systems along with rear cable management and power strips.

What accessories work with this rack?

The full Middle Atlantic MRK accessory line is compatible, including side panels, solid and fan tops, shelves, blanks, and vertical cable managers.

Does Middle Atlantic warranty this rack?

Middle Atlantic enclosures are covered by the manufacturer's warranty. Contact Creation Networks for current warranty terms and registration details.

Can Creation Networks help with rack configuration for my project?

Yes. Our commercial AV team assists integrators and facility managers with rack elevations, accessory selection, and volume project pricing.