Middle Atlantic PROWMRK-RR – Extra Rackrail for WMRK Racks

Product Overview

The Middle Atlantic PROWMRK-RR Series provides extra rackrail for WMRK Series enclosures, letting integrators add a second plane of mounting rail for deeper equipment support, rear-mounted accessories, or four-post mounting of servers and network hardware. Each set is heavy-gauge, cage nut style rackrail, sold as a pair with mounting hardware included. Three heights are available to match WMRK rack sizes: PROWMRK-RR24 (24RU), PROWMRK-RR42 (42RU), and PROWMRK-RR45 (45RU). It is a straightforward way to expand mounting capacity in high-density commercial AV and IT rack builds.

Product Description

WMRK Series racks are Middle Atlantic's heavy-duty enclosures for demanding AV integration and IT deployments, and many of those builds call for more than the standard front rackrail. The PROWMRK-RR Series adds an extra pair of rails inside the enclosure, creating the rear mounting plane needed for four-post equipment such as servers, UPS units, and network switches, or for rear-facing accessories like lacer bars, power strips, and cable management hardware.

The rail is heavy-gauge steel in a cage nut style, which lets technicians position square cage nuts wherever threaded mounting points are required and replace them if a thread is ever damaged — a practical advantage over fixed tapped rail in racks that see frequent equipment changes. Each kit is sold as a pair and includes the mounting hardware needed to install the rails in a WMRK enclosure, so there is no separate hardware order to track. Choose the rail height that matches the rack: 24RU, 42RU, or 45RU. For commercial deployment across multiple racks, the consistent cage nut layout keeps installation standards uniform from room to room. Browse compatible WMRK racks, shelves, and accessories in the Middle Atlantic collection at Creation Networks.

Key Features

• Heavy-Gauge Construction — Heavy-gauge rackrail supports dense equipment loads in WMRK Series enclosures.
• Cage Nut Style — Square-hole rail accepts standard cage nuts, allowing flexible thread placement and easy replacement of damaged threads.
• Sold as a Pair — Each SKU includes two rails, covering a full additional mounting plane in one order line.
• Mounting Hardware Included — Kits ship with the hardware required for installation in WMRK racks.
• Three Height Options — Available in 24RU, 42RU, and 45RU versions to match WMRK enclosure sizes.
• Enables Four-Post Mounting — Adds the rear rail plane needed for servers, UPS units, and network equipment in AV-over-IT installations.

Typical Applications

• Broadcast studio equipment racks and central machine rooms
• Government space communications and AV head-end racks
• Auditorium and all-hands room equipment rooms
• Boardroom and conference room AV system racks
• Training room and commercial meeting space infrastructure racks
• House of worship AV and IT equipment enclosures

Technical Specifications

Frequently Asked Questions

Which racks does the PROWMRK-RR Series fit?
PROWMRK-RR extra rackrail is designed for Middle Atlantic WMRK Series enclosures. Match the rail height to your rack: 24RU, 42RU, or 45RU.

What does cage nut style mean?
The rail has square holes that accept standard cage nuts. Technicians snap cage nuts in only where mounting threads are needed, and a damaged nut can be swapped rather than re-tapping a fixed rail.

Is mounting hardware included?
Yes. Each pair ships with the hardware needed to install the rails in a WMRK Series rack, so no separate hardware purchase is required.

Why would I add extra rackrail to my rack?
A second rail plane enables four-post mounting for servers, UPS units, and switches, and provides attachment points for rear-mounted power, lacer bars, and cable management in dense AV integration work.

How many rails come in a pack?
Each SKU is sold as a pair — two rails — which forms one complete additional mounting plane in the enclosure.

Is this product covered by a warranty?
Yes. Middle Atlantic rack hardware is backed by the manufacturer's warranty. Contact Creation Networks for current warranty terms and support.

Can Creation Networks help me configure a WMRK rack build?
Yes. Our team helps integrators and IT staff select racks, rail, power, and thermal accessories from the full Middle Atlantic line for commercial deployments.