Middle Atlantic 5-21-26 Slim 5 Series 21RU Rack Frame, 26in Deep, Black
Overview
The Middle Atlantic 5-21-26 is a 21-rack-unit, open-frame floor-standing rack from the Middle Atlantic Slim 5 Series — engineered for AV, security, and IT equipment rooms where footprint matters but load capacity cannot be compromised. At 26 inches of usable depth and a 400 lb UL-rated load capacity, it handles fully populated NVR and server chassis without flex or sag. The knockdown construction ships flat and assembles without tools beyond basic hardware, making it practical for staged deployments across multiple sites. TAA-compliant and manufactured in the USA, the 5-21-26 satisfies federal procurement requirements where country-of-origin documentation is required. This is a frame-only configuration — no doors, side panels, or blanks included — which keeps cost down for integrators building custom enclosures or populating racks in controlled equipment rooms.
Compatibility
Accepts any standard 19-inch rackmount equipment using 10-32 threaded rack rails — the industry-standard thread pitch for AV and security gear. Compatible with the full range of Middle Atlantic rack accessories, including cable managers, brush panels, power strips, and blanking panels designed for the Slim 5 frame family. The 26-inch usable depth accommodates most 1U–4U NVRs, network switches, UPS units, and patch panels; verify rear-clearance requirements for deep chassis (typically 24–28 inches) before ordering. The gangable design supports side-by-side multi-bay configurations for larger equipment rooms. Pairs naturally with rackmount UPS and power distribution units sized for 19-inch bays.
Installation Notes
Rack type is knockdown — arrives disassembled and requires assembly on-site. Product weight is 34 lbs; budget for two-person lift during final positioning. Shipping weight is 48.98 lbs; plan freight accordingly for multi-rack orders. The 10-32 rail thread requires matching 10-32 cage nuts or pre-threaded hardware — confirm your equipment uses 10-32 fasteners, not M6, before installation. Overall height is 40.5 inches (102.9 cm); verify ceiling and door clearance in your equipment room before specifying this frame for a 21RU build.
