Middle Atlantic MRK-4436 44U 36-Inch Deep Gangable Floor Rack with Rear Door
Overview
The MRK-4436 is a 44-rack-unit, 36-inch-deep gangable floor-standing rack from Middle Atlantic's MRK AV rack line, built for AV, security, and IT equipment rooms where depth, load capacity, and seismic compliance are non-negotiable. At 77.13 inches of usable height and 33.6 inches of usable depth, it accommodates full-depth servers, NVRs, UPS units, and deep AV processors without crowding. The 10,000 lb weight capacity isn't a typo — this frame is rated for dense, fully populated rows of equipment. UL-listed for seismic performance to ASCE 7-10, making it suitable for installations in seismic zones where code compliance is required. TAA compliant (country of origin: Mexico), so it qualifies for federal and government projects.
The included rear door protects cabling and rear-panel connectors from accidental contact in shared equipment rooms or open-access wiring closets. The gangable design lets you bolt multiple MRK-series frames side-by-side without gaps, building out high-density rows without custom spacers or adapters. This is a frame-only product — no side panels are included, which keeps weight down during installation and allows cable management accessories to be added as needed.
Compatibility
Accepts any standard 19-inch rack-mount equipment on 10-32 threaded rails — the industry-standard thread pattern used by virtually all enterprise networking, AV, and security hardware. Compatible with Middle Atlantic's MRK-series accessory ecosystem: blanking panels, power strips, cable managers, and mounting shelves designed for this rail spacing and frame depth. Gangable with other MRK-family frames, so mixed-depth rows are possible when paired with compatible MRK variants. Rear door attachment is included; verify Middle Atlantic accessory SKUs for side panels if a fully enclosed cabinet configuration is required.
Installation Notes
Shipping weight is 173 lbs — plan for a two-person installation and verify freight access before delivery. The 22-inch overall width and 83.13-inch overall height (just over 6 feet 11 inches) require standard commercial door clearance; measure doorways on the installation path before scheduling delivery. UL load capacity is rated at 2,500 lbs; the 10,000 lb figure reflects the static structural weight capacity of the frame itself. When ganging multiple units, follow Middle Atlantic's documented torque specs for the gang hardware to maintain seismic rating compliance under ASCE 7-10.
