Middle Atlantic RSH4S3XX – Custom 3U Rack Shelf, 20.5" Depth

Product Overview

The Middle Atlantic RSH4S3XX is a custom 3U rack shelf with a textured black powder-coat steel face plate, factory cut to match the exact face of the AV component you specify. At 20.5 inches, it is the deepest shelf in the 3U RSH4S lineup, giving full-depth equipment proper support from front panel to rear chassis. It installs in any standard 19-inch equipment rack or enclosure with no modification to the component itself. The result is a finished, gap-free rack opening that looks like factory rackmount hardware.

Product Description

Most racks are filled with at least one component that was never designed for rack mounting. The RSH4S3XX solves that problem for long-chassis gear: Middle Atlantic custom cuts the textured steel face plate to the precise dimensions of your component, drawing on a measurement database of more than 8,000 devices. Your equipment slides in behind the face plate and presents a clean, trimmed opening with a snug fit and no visible gaps.

The 20.5-inch usable depth is what sets this model apart from its shallower siblings. Full-depth AV receivers, power amplifiers, and other extended-chassis components that overhang a standard shelf sit fully supported on this platform. Included rear brackets keep the mounted component from sliding backward out of the enclosure, and a ventilated bottom panel promotes passive airflow under the chassis to help manage heat in dense rack builds. The textured black powder-coat finish matches Middle Atlantic rack panels and blanks, so the shelf blends into the rest of the elevation. When ordering, provide the make and model of the component you plan to mount so the face plate can be cut to spec — the team at Creation Networks can confirm fit before the order is placed.

Key Features

• Custom-Cut Face Plate — Steel face plate is factory cut to the exact front-panel dimensions of the component you specify, leaving no gaps.
• Deepest 3U Option — 20.5-inch depth supports full-depth receivers, amplifiers, and long-chassis source equipment.
• 8,000+ Component Database — Middle Atlantic maintains measured dimensions for thousands of AV devices to ensure an accurate cut.
• Textured Black Powder-Coat Finish — Durable steel finish matches standard Middle Atlantic rack panels and accessories.
• Rear Retention Brackets — Included brackets prevent the mounted component from sliding out the back of the rack.
• Ventilated Bottom — Perforated base improves airflow around the mounted chassis for cooler operation.
• Standard 19-Inch Compatibility — Mounts in any EIA-standard 19-inch rack or enclosure without modification.

Technical Specifications