Middle Atlantic SRSR-4-21 - 21SP 4-Slide Rotating Rack

Product Overview

The Middle Atlantic SRSR-4-21 is a 21-space, 4-slide rotating sliding rack system for professional AV integrators building large concealed equipment bays in furniture, wall, and millwork environments. This 4-slide rotating rack for commercial AV supports the load and stability demands of a fully populated 21U system, offering a meaningful capacity advantage over the 2-slide SRSR-X for high-weight equipment configurations. The SRSR-4-21 is a top-tier in-furniture rack system with 4-slide construction and a reliable hidden AV rack millwork integrator solution for corporate, institutional, and high-end residential AV installations.

Product Description

The SRSR-4-21 delivers 21 rack spaces on Middle Atlantic's SRSR-4 platform, using four independent slides to support and guide the rack assembly through its full extension travel. At 21U, the total system weight can be substantial, and the four-slide design is engineered to handle it: the additional slide pairs over the SRSR-X distribute mechanical load more evenly, minimize lateral sway, and keep the extension motion consistent even with a mixed-weight population of amplifiers, DSPs, video processing hardware, and network equipment. When service is required, the rack extends forward on all four slides and pivots 90 degrees, exposing both the front and rear of all installed equipment simultaneously while all cabling remains connected. This slide-out rack high capacity service approach eliminates downtime and configuration risk during routine maintenance. SRSR rack tight space installation profiles fit cleanly into architectural millwork and in-wall enclosures. The SRSR-4-21 is fully compatible with all EIA-standard 19-inch rack equipment and Middle Atlantic's complete accessory ecosystem, including cable management, power distribution, and rack panels.

Key Features

• 4-Slide Mechanism — Four independent slides provide the weight capacity and lateral stability needed for a fully loaded 21U bay, significantly outperforming 2-slide SRSR-X designs under heavy load conditions.
• Slide-Out and 90-Degree Rotation — Full front and rear equipment access without cable disconnection or movement of surrounding cabinetry or millwork.
• 21-Space Rack Capacity — Large 21U bay for high-density commercial and institutional AV builds in concealed installation environments.
• In-Furniture and Millwork Compatible — Purpose-built for architectural millwork, in-wall enclosures, and cabinetry where standard open-frame racks cannot be used.
• Full Cable Continuity During Service — Signal and power cables remain connected and systems remain live through the entire slide-and-rotate service cycle.
• High Weight Capacity — Four-slide construction supports heavy 21U equipment loads without sagging, binding, or lateral deviation across the full extension range.
• Standard 19-Inch Rail Compatibility — Accepts all EIA-standard AV, IT, and control system rack equipment.

Typical Applications

• In-furniture AV rack installations in large residential and commercial cabinetry
• In-wall rack enclosures for high-density commercial and institutional AV systems
• Architectural millwork AV systems for corporate headquarters, universities, and hospitality environments
• High-density equipment bays in auditoriums, conference centers, and broadcast facilities
• Large-scale custom AV integrations requiring complete concealment and full rear service access

Technical Specifications

Frequently Asked Questions

What is the difference between the SRSR-4 and the SRSR-X?

The SRSR-4 uses four independent slides versus two on the SRSR-X. For a 21U build with a heavy equipment population, the four-slide system provides substantially greater weight capacity, improved lateral stability, and a smoother, more controlled extension cycle.

Can I service equipment without disconnecting cables?

Yes. The SRSR-4-21 extends and rotates 90 degrees while all signal and power connections remain live, providing full front and rear access with no unplugging or system disruption.

What type of equipment fits in the SRSR-4-21?

Any standard 19-inch EIA rack equipment, including multichannel amplifiers, DSPs, video processors, control systems, network switches, and patch panels, up to 21U total.

Is the SRSR-4-21 suitable for in-wall installations?

Yes. The SRSR-4 series is engineered for in-wall, in-furniture, and architectural millwork environments that require full concealment and slide-and-rotate serviceability.

Where can I purchase the SRSR-4-21?

The Middle Atlantic SRSR-4-21 is available at creationnetworks.net.