Middle Atlantic RSH4A9S - 9U Rackmount Enclosure 11.5"D

Product Overview

The Middle Atlantic RSH4A9S is a 9U custom-depth anodized aluminum rackmount enclosure with an 11.5-inch internal depth, part of the RSH4A series designed for AV and IT equipment installations requiring a professional, durable rack solution in a compact form factor. The RSH4A series uses anodized aluminum construction throughout, delivering corrosion resistance, light weight relative to steel alternatives, and a finished appearance suitable for exposed or semi-exposed installations. At 9U, the RSH4A9S provides enough rack space for a mid-scale equipment deployment in conference rooms, control rooms, and server alcoves. The 11.5-inch depth (S suffix) is the shallowest available RSH4A9 variant, suited to installations where equipment depth is minimal or wall depth is restricted.

Product Description

The RSH4A series from Middle Atlantic is a purpose-built rackmount enclosure platform constructed from anodized aluminum, offering a combination of structural integrity and corrosion resistance that makes it appropriate for demanding AV and IT installation environments. The RSH4A9S specifically delivers 9U of usable rack space at an 11.5-inch depth, making it the correct choice for installations where shallow equipment profiles or constrained wall or furniture cavities dictate a minimal enclosure depth. The anodized aluminum finish is applied to all structural surfaces, providing a consistent, professional appearance while protecting the enclosure from oxidation and surface wear over the life of the installation. Rack rails are punched to the EIA-310 standard, ensuring compatibility with all standard 19-inch rack-mount equipment. The 11.5-inch internal depth (indicated by the S suffix in the RSH4A naming convention) accommodates shallow AV and IT components such as patch panels, cable managers, thin processors, and other low-depth rack-mount devices that do not require the additional depth of the M (14"), X (17.5"), or XX (20.5") variants. The enclosure is designed for floor or wall installation depending on the mounting hardware selected, providing flexibility across installation types. Build quality reflects Middle Atlantic's standards for professional AV and IT integration, with tight dimensional tolerances that ensure rack unit alignment is accurate across the full 9U height. For integrators who regularly specify the RSH4A system, the 9S is the right choice when enclosure depth must be minimized without sacrificing rack space.

Key Features

• 9U Capacity — Provides rack space for mid-scale AV and IT equipment deployments.
• 11.5" Internal Depth (S) — Shallowest RSH4A9 variant; suited to constrained wall or furniture installations.
• Anodized Aluminum Construction — Corrosion-resistant, lightweight, and professionally finished.
• EIA-310 Rail Pattern — Compatible with all standard 19-inch rack-mount equipment.
• RSH4A Series — Part of Middle Atlantic's custom-depth rackmount enclosure platform.
• Floor or Wall Mount — Flexible installation options with appropriate mounting hardware.
• Tight Dimensional Tolerances — Accurate rack unit alignment across the full 9U height.

Technical Specifications