Middle Atlantic WMRK-4542 – 45RU 42"D Wall-Mount Rack Frame

Product Overview

The Middle Atlantic WMRK-4542 is a 45-rack-unit, 42-inch-deep open-frame wall-mount rack chassis built for telecom closets, IDF rooms, and in-wall AV equipment installations where a freestanding rack is impractical. This open-frame wall-mount rack provides maximum vertical mounting capacity at a 42-inch depth without a top panel, side panels, or door, enabling unrestricted airflow and cable access. AV integrators and IT managers specifying wall-mount open-frame racks for high-density IDF buildouts and AV distribution systems choose the WMRK series for its structural integrity and installation versatility.

Product Description

The WMRK-4542 delivers 45 rack units on an open-frame chassis that mounts directly to the wall, making it one of the highest-capacity WMRK series models available. The 42-inch depth accommodates the majority of professional networking, AV distribution, and signal processing equipment without requiring the additional depth of the WMRK-4248. The open-frame construction eliminates side panels, top cover, and doors, allowing technicians to route cables from any direction and ensuring thermal airflow is not restricted regardless of equipment density. Wall-mount attachment removes the floor footprint entirely, which is critical in telecom closets and IDF rooms where floor space is occupied by cable trays, pathways, and other infrastructure. Heavy-gauge steel frame construction supports the full equipment load on wall-mount brackets. Standard EIA 19-inch mounting rail spacing ensures compatibility with patch panels, switches, AV processors, amplifiers, and any standard rack-mount equipment. The WMRK-4542 is well-suited to recessed in-wall installations where the 42-inch depth fits within wall stud bays or purpose-built equipment niches. Available from Creation Networks at creationnetworks.net.

Key Features

• 45-Rack-Unit Capacity — Highest vertical capacity in the standard WMRK wall-mount series for maximum equipment density.
• 42-Inch Depth — Fits most professional AV and networking gear while remaining shallower than the 48-inch WMRK-4248.
• Open-Frame Design — No top, sides, or door for unrestricted airflow and multi-directional cable routing.
• Direct Wall Mount — Eliminates floor footprint in telecom closets and IDF rooms.
• Standard EIA 19-Inch Rails — Universal compatibility with all standard rackmount equipment.
• Heavy-Gauge Steel Frame — Supports full equipment load on wall-mount brackets.
• Recessed In-Wall Compatible — Depth fits within wall cavities for clean, flush installations.
• Versatile Mounting Options — Suitable for surface-mount or recessed installation depending on wall construction.

Typical Applications

• Telecom closets, IDF, and MDF rooms
• In-wall AV equipment installations in commercial and residential settings
• Hospitality guestroom corridor AV/IT equipment niches
• Education building network distribution and AV closets
• Retail network and digital signage infrastructure
• Healthcare facility IDF and nurse station AV/IT equipment rooms

Technical Specifications

Frequently Asked Questions

How does the WMRK-4542 differ from the WMRK-4248?

The WMRK-4542 provides 45 rack units at 42-inch depth, while the WMRK-4248 provides 42 rack units at 48-inch depth. Choose the WMRK-4542 when more rack height is needed and equipment depth does not exceed 38-40 inches.

Does the open-frame design allow for future enclosure additions?

The WMRK chassis is a frame-only product. Optional side panels, top panels, and locking doors are available as accessories to convert it to a semi-enclosed configuration.

Can this rack be surface-mounted or does it have to be recessed?

The WMRK-4542 can be surface-mounted against the wall or recessed into a wall cavity depending on the depth available and installation requirements.

What anchoring is required for wall mounting?

Wall mounting requires anchoring into structural wall studs or purpose-built blocking rated for the combined weight of the chassis and all installed equipment. Local building codes may impose additional requirements.

Is the 42-inch depth sufficient for most AV and IT equipment?

Yes. The majority of rackmount AV and IT equipment, including network switches, routers, patch panels, amplifiers, and AV processors, fits within 42-inch depth. Exceptions include some large UPS units and deep server platforms.

Where can I purchase the WMRK-4542?

The WMRK-4542 is available from Creation Networks at creationnetworks.net.

Does the open-frame design present a security risk for installed equipment?

In secure or public-access environments, optional locking panels and doors can be added. For installations in locked telecom closets, the open-frame design presents no additional security concern.