Middle Atlantic ERK-2125LRD 21U Open-Frame Floor-Standing Rack
Overview
The ERK-2125LRD is a 21U, 25-inch-deep open-frame floor-standing rack from Middle Atlantic's ERK Series, built for AV equipment rooms, security head-end closets, and datacenter edge deployments where a full enclosure would restrict airflow or access. The ERK-2125LRD ships as a frame-only configuration — no front or rear doors — making it the right choice when integrators need unobstructed front and rear access to recorders, patch panels, and power distribution units. At 79.1 lbs (product weight) with a UL-listed 2,500 lb load capacity, this rack handles dense NVR and server builds without concern for structural limits. It is seismic-rated per UL standards and is TAA-compliant and manufactured in the USA, which satisfies federal and government procurement requirements. The steel frame with black wrinkle powder coat finish holds up in commercial install environments without the cosmetic wear of standard painted steel. For integrators building out surveillance infrastructure or NVR head-end racks, the ERK Series is a well-understood, field-proven platform.
Compatibility
The ERK-2125LRD accepts standard 19-inch panel-width equipment on 10-32 threaded rack rails — the industry-standard fastener for AV and security gear. At 23.47 inches of usable depth and 36.88 inches of usable height (21RU), it accommodates full-depth 1U–4U NVRs, switches, UPS units, and patch panels without modification. It pairs directly with Middle Atlantic's ERK Series accessories including lacing bars, brush panels, and PDUs designed for the ERK rail geometry. For deeper builds — rack-mount servers, extended-length UPS units, or high-density PoE switches — verify equipment depth against the 23.47-inch usable figure before ordering. Consult the rack and enclosure category for compatible Middle Atlantic PDUs, blanks, and cable management. If rear-door security or dust management is required, Middle Atlantic's ERK Series rear door accessories or an enclosed variant should be evaluated instead. For PoE infrastructure planning, see the PoE switch selection to match rack depth and load requirements.
Installation Notes
The ERK-2125LRD does not ship flat — it arrives pre-assembled, reducing on-site labor. Overall footprint is 22 inches wide by 40.88 inches tall by 25 inches deep; account for cable egress clearance on all sides before positioning. Shipping weight is 111 lbs — plan for two-person handling or a lift. The frame-only configuration means no door hardware to remove for initial equipment loading. 10-32 cage nuts and rack screws are not confirmed included in evidence; verify fastener supply before deployment.
