Middle Atlantic MRK-2426LRD 24RU Open-Frame Floor Rack
Overview
The Middle Atlantic MRK-2426LRD is a 24RU, 26-inch-deep open-frame floor rack built for AV and security equipment rooms where seismic compliance, high load capacity, and gangability are non-negotiable. This is a frame-only configuration — no rear door, no side panels — making it the right choice for high-density NVR, switcher, and server deployments where airflow and front/rear access matter more than enclosure. At 22 inches wide and 48.13 inches tall, MRK-2426LRD ships at 94 lbs and accommodates up to 24RU of gear across a usable depth of 24 inches, leaving 2 inches of rear clearance within the 26-inch overall footprint for cable management. The 10-32 rack rail standard means direct compatibility with the vast majority of commercial security and AV gear without adapter hardware. TAA-compliant and manufactured in the USA — relevant for federal, DoD, and government-funded deployments with domestic-sourcing requirements.
Compatibility
Designed for the Middle Atlantic MRK rack series, this frame is gangable — multiple MRK-2426LRD units can be bolted side-by-side to expand capacity without additional structural framing. The 19-inch panel-width standard fits all standard rackmount NVRs, managed PoE switches, patch panels, and UPS units using 10-32 thread fasteners. The 24-inch usable depth accommodates full-depth 1U and 2U servers and most rackmount power distribution units. ASCE 7-10 seismic load compliance makes this frame suitable for installations in seismic zones — a hard requirement in California, Pacific Northwest, and other high-risk regions. Not designed for outdoor or harsh-environment use; this is an indoor equipment room and server closet rack.
Installation Notes
Frame-only configuration requires separate purchase of rack accessories — doors, side panels, and blanks are not included. The 22-inch outer width is the planning dimension for floor cutouts and rack room layouts; the 19-inch panel width is the equipment-mounting dimension. Confirm floor load ratings before deployment: static weight capacity is rated at 10,000 lbs, UL-listed seismic load capacity at 2,500 lbs per ASCE 7-10. Gangable mounting requires Middle Atlantic gang hardware; verify current MRK gang kit compatibility before ordering if combining multiple frames. Shipping weight of 94 lbs requires two-person lift for positioning.
