Middle Atlantic 21 Space 28IN. D Rack with Rear Door - ERK-2128

Middle Atlantic ERK-2128 21U 28-Inch Deep Floor-Standing AV/Security Rack

Overview

The Middle Atlantic ERK-2128 is a 21-rack-unit, 28-inch-deep floor-standing steel enclosure built for integrators who need a dependable, high-capacity rack in security operations centers, server closets, AV equipment rooms, and surveillance head-end installs. At 2,500 lbs UL-rated load capacity, it handles fully loaded network video recorders, switches, and patch panels without compromise. TAA-compliant and seismically rated, it satisfies federal procurement requirements and California seismic zone deployments right out of the box.

The ERK-2128 ships as a frame-only configuration — meaning you size and populate it with the exact shelves, PDUs, and cable managers your project demands, rather than paying for hardware you won't use. The black wrinkle powder-coat finish on 22-inch-wide cold-rolled steel is purpose-built for utility spaces where durability matters more than aesthetics.

Key Features

• 21 Rack Units (36.88 in usable height): Fits a fully populated security rack stack — dual NVRs, managed PoE switch, patch panel, and UPS — without the wasted space or cost of a 24U or 42U frame when your head-end doesn't need it.
• 2,500 lb UL-Listed Load Capacity: UL-verified, not just claimed. A fully loaded 21U rack with enterprise NVRs, drives, and redundant power supplies rarely exceeds 400–600 lbs; this rating gives you a 4–6× safety margin and covers any foreseeable deployment expansion.
• 28-inch Depth (26.47 in usable): Accommodates deep 1U/2U servers and NVR appliances that run 24–26 inches. The 26.47-inch usable depth is the number that matters — measure your deepest device before assuming a shallower rack will clear.
• Rear Door Included: Enclosed rear access reduces dust ingress on long-term deployments and provides a basic physical security layer in shared equipment rooms. Useful in warehouse and light-industrial installs where blowing dust is a real factor.
• 10-32 Rack Rail Threading: Industry-standard 10-32 tapped rails accept the full Middle Atlantic accessory ecosystem — rack shelves, cable management, and PDUs — as well as third-party 19-inch rack equipment without adapter hardware.
• Seismic Load Rating (ASCE/UL): Verified for seismic performance under UL and ASCE standards. Required for California Title 24 and federal installations in seismic zones — check your AHJ requirements before spec'ing a non-rated enclosure.
• TAA Compliant, Made in USA: Federal origin requirements (TAA/FAR) satisfied. Country of origin is the USA, documented. Simplifies GSA schedule and government contract procurement without extra paperwork.
• Steel Construction, Black Wrinkle Powder Coat: Cold-rolled steel frame resists the rack flex that plagues lighter aluminum enclosures under heavy server loads. The powder-coat finish resists scratches and corrosion in utility and mechanical room environments.
• Frame-Only Configuration: No bundled shelves, blanks, or cable managers you don't need. Integrators who build out racks to spec prefer this — add exactly what the bill of materials calls for, no more.

Integration & Compatibility

The ERK-2128 follows EIA-310 19-inch rack standards, so every 1U–4U device in your Middle Atlantic rack system lineup — NVRs, PoE switches, KVM units, UPS modules — mounts directly. The 10-32 threaded rails accept standard rack screws without cage nuts, speeding up installation in time-sensitive deployments. For seismic anchoring, the base footprint (22 in wide × 28 in deep) provides a stable anchor point; consult Middle Atlantic's seismic anchoring kit documentation for your specific floor type and zone rating.

If your project includes rack-mount PDUs, blanking panels, or structured cabling, the frame-only format means you source the exact accessories you need — there's no need to remove or discard pre-installed hardware that doesn't fit your cable management plan.

Frequently Asked Questions

Q: Is the Middle Atlantic ERK-2128 TAA compliant?

A: Yes. The ERK-2128 is TAA compliant with a Federal country of origin documented as USA, making it eligible for GSA and government contract procurement.

Q: What is the actual usable depth inside the ERK-2128?

A: The usable depth is 26.47 inches (67.2 cm), even though the overall rack depth is 28 inches. Always verify your deepest device's rear connector clearance fits within 26.47 inches.

Q: What is the UL-listed load capacity of the ERK-2128?

A: The ERK-2128 carries a UL-listed load capacity of 2,500 lbs (1,134 kg), verified under UL seismic load standards — not a manufacturer self-rating.

Q: Does the ERK-2128 come with shelves, blanking panels, or a PDU?

A: No. The ERK-2128 ships as a frame-only configuration. Shelves, PDUs, blanking panels, and cable managers are sourced separately, giving integrators full control over the rack build-out.

Q: Is the ERK-2128 seismically rated?

A: Yes. The ERK-2128 is UL listed for seismic load capacity and carries an ASCE seismic rating, satisfying requirements for California Title 24 and federal seismic zone installations.

Q: What rack rail thread type does the ERK-2128 use?

A: The ERK-2128 uses standard 10-32 threaded rack rails. No cage nuts required — standard 10-32 screws seat directly into the tapped rails.