Middle Atlantic WMRK-4248 – 42RU 48"D Wall-Mount Rack Frame

Product Overview

The Middle Atlantic WMRK-4248 is a 42-rack-unit, 48-inch-deep open-frame wall-mount rack chassis designed for in-wall, telecom closet, and low-overhead AV equipment installations where a full enclosed rack enclosure is impractical. This wall-mount open-frame rack provides the structural mounting surface of a full rack at a wall-mount depth of 48 inches without the added footprint of a freestanding enclosure. IT managers and AV integrators specifying wall-mount rack frames for telecom closets, IDF rooms, and equipment alcoves benefit from the WMRK series open-frame construction.

Product Description

The WMRK-4248 open-frame wall-mount rack delivers 42 rack units on a chassis that mounts directly to the wall, eliminating the floor space consumed by a freestanding rack. With a 48-inch depth, it accommodates a wide range of networking, AV distribution, and signal processing equipment. The open-frame design (no top panel, side panels, or door) allows unrestricted airflow and cable access from any angle, which is advantageous in tight telecom closets where technicians need to work around the rack quickly. Heavy-gauge steel construction supports the weight of a fully populated rack directly on the wall-mount bracket system. Standard EIA 19-inch mounting rails provide universal compatibility with patch panels, switches, routers, amplifiers, and AV distribution equipment. The WMRK series is specifically designed for in-wall and recessed installations where the rack depth can be hidden within a wall cavity or equipment alcove. This makes it a common choice for commercial and residential AV installations where a clean finished appearance is required with no visible rack enclosure protruding into the room. Available from Creation Networks at creationnetworks.net for AV and IT system designers.

Key Features

• 42-Rack-Unit Capacity — Provides full-height rack mounting in a wall-mount configuration.
• 48-Inch Depth — Accommodates deep networking, server, and AV distribution equipment.
• Open-Frame Design — No top, sides, or door for unrestricted airflow and 360-degree cable access.
• Direct Wall Mount — Eliminates floor footprint; mounts flush or recessed into wall structures.
• Standard EIA 19-Inch Rails — Compatible with all standard rackmount equipment.
• Heavy-Gauge Steel Frame — Supports full equipment load on wall-mount brackets.
• In-Wall and Recessed Compatible — Designed for installations where the rack recesses into a wall cavity.
• Telecom Closet Optimized — Compact wall-mounted format suited to IDF and MDF rooms with limited floor space.

Typical Applications

• Telecom closets, IDF, and MDF rooms
• In-wall AV equipment installations in commercial buildings
• Residential home theater and whole-home AV distribution alcoves
• Hospitality guestroom and corridor AV/IT equipment niches
• Retail and small-business network equipment installations
• Education classroom and lab network/AV closets

Technical Specifications

Frequently Asked Questions

What does open-frame mean for the WMRK-4248?

Open-frame means the rack chassis has no top panel, side panels, or door. Only the mounting rails and structural frame are present, allowing full airflow and cable access from all sides.

How is the WMRK-4248 mounted to the wall?

The chassis attaches to wall-mount brackets anchored into wall studs or structural blocking. Proper wall preparation and load calculation are required for installations at full equipment capacity.

Can the WMRK-4248 be recessed into a wall cavity?

Yes. The WMRK series is specifically designed for in-wall recessed installations where the rack depth sits within the wall structure, leaving only the equipment face visible.

Is the 48-inch depth necessary for most AV and IT equipment?

48 inches accommodates virtually all standard rackmount equipment including deep servers, UPS units, and AV signal processors. If shallower equipment is used, the WMRK-4542 at 42-inch depth may also be considered.

Does the open-frame design create any security concern?

For installations requiring equipment security, an optional locking door or side panels can be added. The base chassis is frame-only; enclosure accessories are available separately.

Where can I purchase the WMRK-4248?

The WMRK-4248 is available from Creation Networks at creationnetworks.net.

What is the difference between the WMRK-4248 and WMRK-4542?

The WMRK-4248 provides 42 rack units at 48-inch depth, while the WMRK-4542 provides 45 rack units at 42-inch depth. Choice depends on whether additional rack height or reduced depth is the priority.