Middle Atlantic R412-5124B 51SP 4-POST FRM RK 12/24

Product Overview

The Middle Atlantic R412-5124B is a 51-space, 4-post open-frame rack supporting both 12-inch and 24-inch mounting depths, designed for data center, IT, and AV infrastructure applications requiring dual-depth rail flexibility. The 4-post open-frame design provides unrestricted access to equipment from all sides, making it the preferred mounting solution for dense server, network switch, and patch panel installations. With 51 rack spaces of mounting height, the R412-5124B is suited for the tallest standard rack deployments in enterprise and professional environments.

Product Description

The R412-5124B is constructed on a welded steel frame with a black powder coat finish, providing structural stability and durability in permanent data center and equipment room installations. Four vertical posts with 10-32 tapped rails at EIA-310 spacing support equipment at both 12-inch and 24-inch horizontal mounting depth positions, accommodating shallow patch panels and deep server hardware within the same rack frame. The open-frame design eliminates side panels and doors, providing unrestricted cable access and airflow to all installed equipment—a critical requirement in high-density server and network deployments where cable management and cooling are primary concerns. Fifty-one rack spaces provide ample mounting height for full data center build-outs including top-of-rack switching, patch panels, servers, and power distribution units. The frame is compatible with standard cable management accessories, blanks, and toolless rail kits from the Middle Atlantic product line. Leveling feet are included for stable placement on raised or finished floors, and optional casters are available for temporary mobility. The R412-5124B ships with all assembly hardware and is designed for straightforward tool-based installation. The unit is UL and ETL listed for North American data center and professional AV deployments.

Key Features

• 51 Rack Spaces — Full-height capacity for large data center and AV system builds.
• Dual Mounting Depth: 12" and 24" — Accommodates shallow patch panels and deep server hardware in the same frame.
• 4-Post Open Frame — Unrestricted side access for cabling, cooling, and equipment service.
• 10-32 Tapped Rails — EIA-310 compliant for universal rackmount equipment compatibility.
• Welded Steel Construction — High load capacity for fully populated server and network builds.
• Leveling Feet Included — Stable placement on raised access or finished floors.
• Accessory Compatible — Works with Middle Atlantic cable managers, blanks, and toolless rail kits.
• Black Powder Coat Finish — Professional appearance consistent with data center environments.

Typical Applications

• Data center server rack deployments
• Network infrastructure and top-of-rack switching installations
• IT equipment room patch panel and cable management builds
• Enterprise telecommunications and structured cabling deployments
• Professional AV installations requiring 4-post open-frame mounting

Technical Specifications

Frequently Asked Questions

What does dual 12/24-inch depth mean on the R412-5124B?

The four-post frame allows front rails to be positioned at either 12 or 24 inches from the rear rails. This enables mixed installations where shallow equipment such as patch panels can be mounted at 12 inches and deep servers or switches can be mounted at 24 inches within the same rack.

Does the R412-5124B include side panels or doors?

No. The R412-5124B is an open-frame design without side panels or doors. This is the standard configuration for data center applications where cable access and airflow from all sides are required.

Is the R412-5124B compatible with toolless rail kits?

Yes. The R412-5124B is compatible with Middle Atlantic toolless rail kits and standard square-hole or 10-32 tapped server rail accessories from major server and networking manufacturers.

Where can I purchase the R412-5124B?

The R412-5124B is available through Creation Networks at creationnetworks.net.