Middle Atlantic WMRK-4242SVR-AB 42U Pre-Configured Server Rack Enclosure
Overview
The WMRK-4242SVR-AB is a 42U floor-standing server rack enclosure from Middle Atlantic, pre-configured for data deployments. It ships at 306 lbs and delivers a 39.5-inch usable depth — enough clearance for full-depth servers, NVRs, and high-density patch fields without improvising cable management. At 80.06 inches tall and 23.94 inches wide, it fits standard data room and IDF closet footprints. Manufactured in the USA, it carries UL listing under ASCE 7-10 seismic standards — a requirement on many commercial and government facility projects.
Compatibility
Fits any standard 19-inch rack-mount equipment: 1U through 10U NVRs, servers, switches, patch panels, KVM units, and power distribution units using cage nut mounting. The 42 RU usable height accommodates mixed-height configurations common in surveillance and network infrastructure builds — pair with network video recorders, PoE switches, and fiber patch panels in a single enclosure. Compatible with standard EIA-310 19-inch rack accessories. The pre-configured data layout suits NVR-centric surveillance system buildouts, server rooms, and structured cabling closets. Review the full Middle Atlantic rack and enclosure catalog for coordinating accessories such as side panels, blanks, and power strips designed for the WMRK series.
Installation Notes
Cage nut rail type requires a cage nut insertion tool and appropriate M6 or 12-24 cage nuts — not included. The 10,000 lb static weight capacity handles even the densest deployments, but the 2,500 lb UL dynamic load capacity governs seismic-rated installations under ASCE 7-10; spec the rack accordingly when seismic compliance is a project requirement. Seismic load capacity drops to 1,090 lbs (494 kg) under rated seismic conditions — factor this when designing high-density NVR or server stacks in Zone 2+ environments. Side panels are not included with this configuration. Shipping weight is 306 lbs; plan for lift equipment or a two-person install team. Gangable: No — this unit does not support side-by-side bolted configurations.
