Middle Atlantic WMRK-4242 42U 42-Inch Deep Open Frame Rack
Overview
The Middle Atlantic WMRK-4242 is a 42U, 42-inch deep open frame rack built for data centers, server rooms, and AV equipment bays where airflow, cable access, and front-to-back depth matter. The frame-only configuration — no side panels, no doors — keeps things simple when you're integrating your own cable management or building into a larger enclosure system. At 39.5 inches of usable depth, the WMRK-4242 handles deep 2-post-friendly server chassis and UPS units without forcing you into workarounds. The 19-inch panel width is the standard EIA-310 mounting rail pitch; cage nut rails mean compatibility with virtually every rackmount product in production today. The WMRK-4242 ships at 194 lbs, so plan for a two-person install or mechanical lift assist.
Compatibility
The WMRK-4242 is compatible with the full Middle Atlantic WMRK enclosure family and accepts any standard 19-inch EIA-310 rackmount equipment via cage nut rails — servers, patch panels, network switches, PDUs, AV signal processors, and surveillance NVRs from any manufacturer. The gangable design lets you pair multiple WMRK-4242 units side-by-side in high-density deployments without additional adapter hardware. Side panels are not included and sold separately within the WMRK accessory line for integrators who need containment in the same frame. At 42U, it accommodates network video recorders, managed PoE switches, and supporting infrastructure in a single frame. For broader context on Middle Atlantic rack systems, the WMRK series covers multiple depth and height configurations.
Installation Notes
The 10,000 lb static weight capacity and 2,500 lb UL dynamic (seismic) load rating — certified to ASCE 7-10 — make this appropriate for earthquake-zone deployments that require documented compliance. TAA compliant and manufactured in the USA, which matters for federal and government contracts under the Trade Agreements Act. The 23.94-inch overall width requires planning for rack-row spacing if you're gangingmultiple units; confirm aisle clearance before ordering. This is a drop-ship item — it ships direct from the manufacturer and cannot be combined with other items in a single shipment.
