StarTech RK2433BKM 24U 4-Post Enclosed Server Rack Cabinet

Overview

The StarTech RK2433BKM is a 24U, 4-post enclosed rack cabinet built for IT rooms, network closets, and surveillance equipment deployments where you need a rigid, secure enclosure that can handle mixed-depth hardware — from shallow patch panels to deep UPS units and NVR appliances. With a mounting depth range of 1.8 in to 29.9 in and a rated capacity of 992.2 lb (450 kg), this cabinet accommodates virtually the full spectrum of rack-mount gear without requiring a second enclosure or specialty rails.

At 46.2 in tall (48.9 in with casters), 23.6 in wide, and 33.6 in deep, the RK2433BKM occupies a compact footprint relative to its 24U capacity — a practical fit for mid-size wiring closets, server rooms, and surveillance head-end rooms that can't dedicate floor space to a full 42U tower. Explore the full StarTech catalog for complementary accessories and infrastructure products.

Key Features

• 24U Capacity with 992.2 lb Load Rating: That 450 kg load rating means you can fully populate all 24U with dense hardware — think high-density PoE switches, NVR appliances, UPS units, and patch panels — without hitting a weight ceiling mid-build. Most mid-range racks cap at 500–700 lb; this headroom matters if you're centralizing a large network video recorder stack or running virtualized infrastructure.
• 1.8 in to 29.9 in Adjustable Mounting Depth: The 28-inch adjustment range is the most operationally significant spec on this cabinet. You can rack a shallow 1U managed switch alongside a 28-inch deep UPS in the same bay — no workarounds, no custom rail kits. For surveillance head-ends mixing NVRs, servers, and networking gear, this eliminates the common problem of buying a second enclosure to handle depth mismatches.
• EIA/ECA-310-E Standard Square Hole Pattern: Square-hole rails are the default for modern rack-mount hardware. Compliance with EIA/ECA-310-E means standard cage nuts (included) work with virtually every vendor's mounting hardware — Cisco, Axis, Hanwha, Dell, HPE, and others. You won't hit compatibility dead-ends mid-deployment.
• All-Around Steel Mesh Construction: Front door, rear door, and side panels are all steel mesh. Mesh on all four sides allows passive airflow to move through the cabinet without relying solely on fan units — useful in environments with good ambient air circulation. When passive cooling isn't enough, the cabinet accepts up to four optional 120 mm fans (not included), which you can add later without modifying the chassis.
• Locking, Reversible, Removable Doors and Side Panels: All three access points — front, rear, and both side panels — are key-locked, reversible, and fully removable. Reversible front and rear doors matter in tight closets where the swing direction conflicts with adjacent walls or other enclosures. Removable side panels simplify cable routing to wall penetrations or adjacent cabinets in multi-rack deployments.
• Caster-Equipped for In-Room Mobility: The included casters bring total height to 48.9 in and allow you to roll the populated rack into position rather than sliding it across a raised floor — meaningful when the cabinet is loaded and you need to adjust its position for cable management or maintenance access.
• Included 1U Fixed Shelf: The bundled 1U fixed shelf provides an immediate mounting surface for non-rackable gear — unmanaged switches, small media converters, a KVM console, or temporary staging equipment — without purchasing an accessory shelf separately on day one.

Integration and Compatibility

The RK2433BKM ships with cage nuts and screws sized for the EIA/ECA-310-E square-hole pattern, covering the full 24U of mounting positions. The 23.6 in internal width is standard 19-inch rack compatible — every piece of 19-inch rack-mount equipment installs without adapters. Internal depth of 33.4 in sets the practical maximum for installed equipment depth; verify your deepest hardware (UPS, server chassis) fits within that dimension before ordering.

If you're building out a structured cabling or network switch infrastructure inside this cabinet, the mesh panels and adjustable post positions make cable management along the sides straightforward. Hook-and-loop fasteners are included for basic cable bundling. For large-scale surveillance builds, pair with a rack accessories kit that includes horizontal cable managers and patch panel brackets to keep the cable plant organized as the rack fills up. Review our server rack buying guide if you're still sizing rack U-height for your deployment.

What's in the Box

• 1x Enclosure Cabinet (RK2433BKM)
• 1x 1U Fixed Shelf
• 1x Hook and Loop Fastener
• Cage Nuts
• Screws
• Keys

Frequently Asked Questions

Q: What is the maximum equipment depth the RK2433BKM can accommodate?

A: The adjustable mounting posts support equipment from 1.8 in to 29.9 in in depth. The internal cabinet depth is 33.4 in, which sets the absolute physical ceiling — verify your deepest hardware (such as extended UPS units or full-depth servers) falls within that dimension before installing.

Q: Does the RK2433BKM use square-hole or round-hole rails?

A: Square-hole rails, compliant with EIA/ECA-310-E. Cage nuts and screws for standard 19-inch rack-mount equipment are included in the box.

Q: Can I add fans to this cabinet later?

A: Yes. The RK2433BKM supports up to four optional 120 mm fans (sold separately). The fan mounts are built into the chassis, so no modification is required to add active cooling after initial installation.

Q: Are the doors and side panels lockable?

A: All access points — front door, rear door, and both side panels — include key locks. Keys are included in the package. Doors are also reversible and removable, which is useful in confined spaces where swing direction is constrained.

Q: What is the warranty on the RK2433BKM?

A: StarTech covers the RK2433BKM with a 5-year manufacturer warranty.

Q: Can this rack be moved after it's loaded?

A: The cabinet ships with casters installed. With casters, the total height is 48.9 in. The casters allow the rack to be repositioned on flat flooring after loading — important for maintenance access in tight rooms. The 992.2 lb load rating applies to the populated cabinet.

Ted Perry

The spec I always check first on a mid-size enclosed rack is the mounting depth range, and the RK2433BKM's 1.8 in to 29.9 in adjustment is one of the widest I've seen at this price tier — it means a single cabinet can house a shallow 1U PoE switch at the front alongside a 28-inch-deep UPS at the rear without ordering custom slide rails or a second enclosure.

Technical Highlights:

• 992.2 lb Load Capacity: At 450 kg rated capacity, you can fully populate all 24U with heavy hardware — dual NVR appliances, a high-density PoE switch stack, a UPS, and patch panels — without approaching the weight limit. Most competing cabinets in this footprint are rated 500–700 lb, so this rating gives real headroom for future expansion.
• All-Mesh Enclosure: Steel mesh on the front, rear, and both sides keeps passive airflow moving through the cabinet. In a conditioned server room, that often eliminates the need for the optional 120 mm fans entirely — lowering noise and reducing one more failure point. Add fans only if ambient room temperature or equipment density demands it.
• EIA/ECA-310-E Square Hole Compliance: Standard square-hole rails with included cage nuts mean every vendor's rack-mount hardware installs without adapter kits. In a mixed-vendor surveillance head-end — NVR from one vendor, switches from another, UPS from a third — this eliminates one of the most common day-one friction points.

Deployment Considerations:

• At 130.1 lb unloaded (59 kg), this cabinet needs two people and a pallet jack to move into position in a finished space — plan the installation route before the unit arrives, especially if there are door frames or ramps involved.
• The four optional 120 mm fan positions are a future provision, not a current capability — if your equipment generates meaningful heat on day one, budget for the fan units upfront rather than retrofitting under load.

The RK2433BKM is a strong fit for surveillance head-end rooms and network closets in mid-size commercial buildings — schools, municipal facilities, corporate campuses — where the equipment mix is heterogeneous, the depth variance between gear is significant, and the install needs to stay maintainable over a 5-year-plus lifecycle.