Middle Atlantic WMRK-4542 45U 42-Inch Deep Gangable Open Frame Server Rack
Overview
The Middle Atlantic WMRK-4542 is a 45-unit, 42-inch-deep open frame server rack built for dense equipment deployments in data centers, broadcast facilities, and enterprise infrastructure rooms. The frame-only configuration means no side panels to work around — direct access from all four sides speeds cable management and simplifies hot-swap operations in high-density rows. At 78.75 inches of usable height across 45 RU, the WMRK-4542 accommodates full-depth servers, storage arrays, and patch infrastructure in a single vertical run without sacrificing front-to-rear airflow. The 39.5-inch usable depth handles full-depth 1U/2U servers and deep UPS units that shorter racks cannot fit.
Compatibility
The WMRK-4542 accepts any equipment built to the EIA-310 19-inch rack standard via standard cage nut mounting rails — compatible with 1U through 45U devices from any manufacturer. The gangable design allows side-by-side joining of multiple WMRK units to build out extended rows without gaps or exposed structural edges, making it a direct fit for multi-rack deployments typical in colocation buildouts and broadcast infrastructure. TAA compliance qualifies the rack for U.S. federal procurement. Seismic rating per ASCE 7-10 makes it suitable for installations in seismically active zones where building codes require rated enclosures. Country of origin: USA.
Installation Notes
The UL-listed static load capacity is 2,500 lbs — sufficient for fully populated 45U rows of 1U servers, though the structural weight capacity of 10,000 lbs reflects the frame's welded construction. Anchor the rack to the floor before populating; the 197 lb shipping weight and 85.06-inch standing height make this a two-person lift minimum. Width of 23.94 inches accounts for the outer frame — verify aisle width accommodates side-by-side gangable configurations before ordering. No side panels are included; blanking panels and cable management accessories must be sourced separately.
