Middle Atlantic WMRK-4242 – 42RU 42" Deep Wall-Mount Frame

Product Overview

The Middle Atlantic WMRK-4242 is a 42RU, 42-inch-deep wall-mount rack frame sized for raised-floor environments where a standard 24-inch enclosure width is required. It ships with two pairs of adjustable cage-nut rack rails, one pair of z-rail sidemount adapters, and 100 6mm cage nuts, providing immediate compatibility with servers and slide kits from all major manufacturers. Fully welded construction and ganging capability make it a practical choice for high-density IT closets and data center perimeter rows.

Product Description

The WMRK-4242 belongs to Middle Atlantic's WMRK series, engineered specifically for mounting deep servers and dense networking equipment in 24-inch-wide raised-floor enclosures. The 42-inch overall depth gives full clearance for 1U through 4U rack-mount servers without the need for extension rail kits on most platforms. Adjustable cage-nut rack rails accept equipment flanges at a wide range of mounting depths, satisfying server manufacturer warranty specifications that require cage-nut mounting. The included z-rail sidemount adapters extend compatibility to slide kits from Dell, HPE, Cisco, and other leading vendors. Fully welded steel construction keeps the frame square and rigid under maximum equipment loads without relying on corner brackets or field assembly. The 24-inch overall width aligns precisely with standard raised-floor tile grids, simplifying cable routing through floor openings directly below the frame. Numbered rack-space increments printed on the rails speed equipment installation and reduce documentation errors during patching. Multiple WMRK-4242 frames gang together laterally when loaded, eliminating inter-cabinet gaps that can disrupt airflow management. One hundred 6mm cage nuts and rack screws are included, covering a full cabinet load without a separate hardware order. Leveling feet are also included for stable positioning on raised or flush floors.

Key Features

• 42RU Rack Space — High-density capacity for servers, switches, and patch panels in a single frame.
• 42" Overall Depth — Accommodates full-depth servers without extension rails.
• 24" Overall Width — Optimized for raised-floor tile grid alignment and standard enclosure footprints.
• Cage-Nut Rails (2 Pair, Adjustable) — Meets server manufacturer warranty specifications; adjusts to equipment depth.
• Z-Rail Sidemount Adapters (1 Pair) — Supports slide kits from Dell, HPE, Cisco, and other major server vendors.
• Fully Welded Construction — Rigid under full load; no field assembly required for the frame.
• Gang-Compatible — Adjacent frames lock together to close airflow gaps in multi-bay rows.
• Numbered Rack Increments — Speeds equipment installation and simplifies rack elevation documentation.
• 100 Cage Nuts + Hardware Included — Enough hardware to fill the frame without a separate parts order.
• Leveling Feet Included — Stable positioning on raised or concrete floors.

Typical Applications

• High-density server rows on raised floors in enterprise data centers
• IT closets requiring deep server mounting in a compact 24" footprint
• Multi-bay deployments where frames gang together for airflow management
• Environments mandating cage-nut rails for server manufacturer warranty compliance
• Network operations centers with mixed server and networking equipment loads

Technical Specifications

Frequently Asked Questions

What is the difference between WMRK and SNE frame products?

The WMRK series is optimized for raised-floor environments with a 24-inch overall width and ships with cage-nut rails and z-rail adapters for server slide kits. The SNE30 frame series is 30 inches wide and targets AV/IT convergence and security network enclosure applications with Lever Lock compatibility.

Does the WMRK-4242 include doors or panels?

No. The WMRK-4242 is a frame-only product. Doors, side panels, and tops are ordered separately to match your airflow and security requirements.

Can the WMRK-4242 be used outside a raised-floor environment?

Yes. The leveling feet allow stable positioning on concrete or finished floors. The 24-inch width and 42-inch depth dimensions remain practical for any installation requiring a compact, deep server rack.

How many frames can gang together?

Multiple WMRK-4242 frames gang together laterally. Practical limits are set by the floor load rating and available footprint of the installation.