Middle Atlantic SET of 4 CASTERS(2 Lock & 2 Non-lock) - CASTERS-K

Middle Atlantic CASTERS-K Set of 4 Rack Casters (2 Locking, 2 Non-Locking)

Overview

The Middle Atlantic CASTERS-K is a four-piece caster kit designed to add mobility to Middle Atlantic RCS, QAR, and MMR series rack bases. The kit ships with two locking casters and two non-locking casters — a split that matters in practice: you roll the rack into position, lock the two locking wheels, and the assembly stays put without needing to wedge anything under it. If your installation involves raised floors, server rooms, or any space where racks get repositioned during maintenance windows, this kit converts a stationary rack into a movable unit without improvising a solution. The CASTERS-K (often searched as CASTERS K) is a purpose-built Middle Atlantic accessory, not a generic aftermarket part, so fitment to the supported base series is direct with no adapter hardware required.

Key Features

• Mixed Locking Configuration (2 + 2): Two locking and two non-locking casters in a single pack means the rack stays stable once positioned — no separate purchase of locking hardware or improvised bracing. Standard practice for rack mobility in network equipment and AV system installations.
• RCS, QAR, and MMR Base Compatibility: Engineered specifically for Middle Atlantic's RCS, QAR, and MMR rack base series. Direct fitment means no drilling, no adapters, and no guesswork on load distribution across the base frame. Check your base model before ordering — this kit does not cover every Middle Atlantic base variant.
• Black Finish: Matches standard Middle Atlantic rack aesthetics. Relevant for installations where the undercarriage is visible — open-frame deployments, staging areas, or trade show setups where rack appearance matters to the client.
• RoHS Compliance: The CASTERS-K meets RoHS requirements, relevant for deployments in public-sector facilities, schools, and EU-destined installations where restricted-substance compliance is part of the procurement checklist.
• Compact Ship Weight (3.14 lbs / 1.4 kg): The full four-pack ships at just over three pounds, so freight cost is negligible and the kit can be included in the same shipment as the rack without meaningfully affecting shipping class. Easy to stage on-site without a second handler.
• Four-Piece Pack (Single SKU): All four casters ship under the CASTERS-K part number — no need to order locking and non-locking wheels separately or track two line items on a purchase order. Simplifies procurement on multi-rack projects.

Integration and Compatibility

The CASTERS-K is confirmed compatible with Middle Atlantic RCS, QAR, and MMR rack base series. If you are specifying a rack system build that includes one of these bases, this caster kit is the manufacturer's designated mobility solution for that platform. For installations where rack positioning is finalized before deployment and the rack will never be moved, fixed leveling feet are typically the right call instead — casters add a small amount of height to the base and may affect rack clearance in tight above-ceiling or under-desk installations. Verify finished rack height against your installation clearance before committing to casters versus feet. For broader context on structuring a rack deployment, the racks and rack accessories category covers complementary components including cable management, blanking panels, and power distribution that pair with Middle Atlantic systems. See the full Middle Atlantic product line for additional base, enclosure, and accessory options.

Frequently Asked Questions

Q: Which Middle Atlantic rack bases is the CASTERS-K compatible with?

A: The CASTERS-K is designed for Middle Atlantic RCS, QAR, and MMR series rack bases. It is not a universal caster kit — verify your base model matches one of these series before ordering.

Q: Does the CASTERS-K include both locking and non-locking casters?

A: Yes. The pack includes four casters total: two with locking mechanisms and two non-locking. This split allows the rack to be rolled into position and then secured in place using the two locking wheels.

Q: Is the CASTERS-K RoHS compliant?

A: Yes. The CASTERS-K carries RoHS compliance certification, making it suitable for deployments where restricted-substance compliance is required.

Q: How much does the CASTERS-K kit weigh?

A: The full four-pack ships at 3.14 lbs (1.4 kg).

Q: Will the CASTERS-K add height to my rack?

A: Yes — casters add some vertical clearance between the rack base and the floor. If ceiling height or rack clearance is tight in your installation, confirm the finished rack height with casters installed before finalizing your design.

Q: Do I need to order locking and non-locking casters separately?

A: No. The CASTERS-K ships as a single SKU containing all four casters (two locking, two non-locking) — no separate part numbers required.

Jerry Tildsen

The CASTERS-K is a small line item that has a real impact on how a rack install goes on commissioning day. On multi-rack deployments using Middle Atlantic RCS, QAR, or MMR bases, having casters already mounted means you can roll each rack into its final position after cable dressing instead of before — which is the right order of operations when you have tight rear clearance or a congested cable tray overhead. The 2-locking / 2-non-locking split is the correct configuration for this: two locking wheels (typically rear-positioned) hold the rack once it is placed, while the two free-rolling front wheels let you pivot the unit without lifting.

Technical Highlights:

• 2 Locking + 2 Non-Locking Casters: The asymmetric configuration is deliberate — diagonal locking placement gives the rack stable multi-point resistance once set, without making repositioning a two-person lift operation.
• RoHS Compliance: Documented compliance means no surprises on government, education, or EU-export jobs where restricted-substance declarations are part of submittal packages.
• 3.14 lb Ship Weight: At just over three pounds for all four casters, the kit adds negligible freight cost and can be consolidated into a single rack shipment without bumping the package into a higher freight class.

Deployment Considerations:

• Confirm base series compatibility before ordering — the CASTERS-K is specific to Middle Atlantic RCS, QAR, and MMR bases. Attempting to fit this kit to other base models or third-party racks is not supported and may result in fitment issues.
• Account for the added height casters introduce to the finished rack stack. In installations with limited ceiling clearance or top-of-rack cable management running close to a ceiling grid, even a few inches of additional height can create a clearance conflict — verify before you roll the rack in.

The CASTERS-K is the right call for staging environments, demo rooms, and permanent installs where rack access is needed during recurring maintenance — any deployment where a rack bolted to the floor means pulling it out from the wall every time a technician needs rear-panel access.