StarTech RK920WALM 9U Wall-Mount Server Rack

Overview

The StarTech RK920WALM is a 9U 4-post wall-mount server rack built for network closets, retail back rooms, and security equipment rooms where floor space for a standing rack cabinet isn't an option. Rated to hold 198.4 lb (90 kg) of gear, it gives integrators a lockable, ventilated enclosure for switches, NVRs, patch panels, and UPS units without eating up floor real estate. If you're deploying an NVR and a PoE switch stack in a space-constrained utility closet, the RK920WALM is the class of rack built for exactly that job. This unit lives alongside the broader StarTech catalog of rack and cable management hardware.

Key Features

• 9U of 4-post mounting space: enough vertical room for a mid-size NVR, a 24-port switch, and a shelf or two — the 4-post design supports gear front AND rear, unlike 2-post open racks that only grip the front rails.
• 198.4 lb (90 kg) weight capacity: covers a fully loaded stack of network video recorders, switches, and a small UPS without derating concerns — check your combined equipment weight against this ceiling before specifying a 9U wall rack over a floor cabinet.
• Adjustable mounting depth, 2.4 in to 18.9 in (6-48 cm): the rails slide to fit shallow patch panels or deeper 1U/2U servers and NVRs, so you're not locked into a single equipment profile when the closet gets re-purposed later.
• Internal width 23.7 in, internal depth 21.5 in: standard 19-inch EIA rail spacing with enough internal clearance for cable dressing and airflow behind deeper appliances.
• Square cage-nut and threaded mounting holes: covers both common rail hole types, so you're not stuck sourcing a specific hardware kit to mount whatever's already in your parts bin.
• Four optional 120mm fan positions: lets you add active cooling if the closet runs hot or the rack is fully loaded with switches and recorders running 24/7 — fans aren't included but the mounting positions are pre-engineered in.
• Steel mesh front door and side panels with key lock: mesh construction passes airflow while the lock keeps casual access out — a real consideration when the rack sits in a shared office or retail back room instead of a dedicated server room.
• Reversible, removable front door: door hinge can swap sides and the door itself lifts off entirely for tight-clearance installs or when you need full open access during a big cabling pass.
• Removable side panels: pull the sides for easier cable routing during initial installation, then reinstall and lock once the build-out is done.
• EIA/ECA-310-E compliant rail spacing: standard-compliant U spacing means any rack-mount NVR, switch, or shelf built to spec will bolt straight in — no proprietary rail surprises.
• 46.3 lb (21.0 kg) empty unit weight: factor this into wall-anchor and stud selection during installation — this is a wall-mounted enclosure, not a floor-standing cabinet, so the mounting surface has to carry both the rack and its full equipment load.

Integration & Compatibility

The RK920WALM accepts any 19-inch rack-mount equipment built to EIA/ECA-310-E spec — NVRs, PoE switches, patch panels, and rack-mount UPS units all bolt in using either the square cage-nut or threaded mounting holes. For guidance on sizing rack depth and U-height against your actual equipment stack before ordering, see the PoE and rack planning guide. Pair it with rack shelves or blanking panels from the rack accessories line to finish out unused U space and keep airflow clean.

What's in the Box

The RK920WALM ships as a complete wall-mount rack enclosure with front door and side panels installed; mounting hardware for wall installation is included with the unit.

Frequently Asked Questions

Q: How much weight can the RK920WALM hold?

A: The RK920WALM is rated for 198.4 lb (90 kg) of installed equipment.

Q: What's the mounting depth range on the RK920WALM?

A: The rails adjust from a minimum of 2.4 in (6 cm) to a maximum of 18.9 in (48 cm), accommodating shallow patch panels up to deeper 1U/2U appliances.

Q: Does the RK920WALM include cooling fans?

A: The rack has four optional 120mm fan mounting positions, but fans are not included — add them separately if the equipment load requires active cooling.

Q: Can I remove the front door or side panels on the RK920WALM?

A: Yes. The front door is reversible and removable, and the side panels are also removable, which helps during cable installation.

Q: What's the warranty on the RK920WALM?

A: The RK920WALM carries a 5-year manufacturer warranty.

Q: What mounting hole types does the RK920WALM rack use?

A: It supports both square cage-nut style and threaded mounting holes.

Eden Phillips

What stands out on the RK920WALM is the mounting depth range — 2.4 in to 18.9 in (6-48 cm) of adjustment on a 9U wall rack is wide enough to handle both thin patch panels and deeper 2U appliances in the same enclosure, which isn't always true of wall-mount racks in this size class.

Technical Highlights:

• 198.4 lb (90 kg) capacity: enough headroom for a stacked NVR, switch, and small UPS without pushing the rated limit — run the numbers on your actual gear before you commit to wall-mount over a floor cabinet.
• Internal width 23.7 in / internal depth 21.5 in: standard EIA rail spacing with real clearance behind the rails for cable dressing, which matters once you're routing a dozen patch cables plus PoE runs.
• Four 120mm fan positions: pre-engineered airflow points mean you're not drilling sheet metal later if the closet runs warm — just buy fans that fit the mounting pattern.

Deployment Considerations:

• At 46.3 lb (21.0 kg) empty, plus up to 198.4 lb of equipment, the wall structure and anchors need to be rated for the combined load — this is not a light-duty shelf bracket install.
• Fans are optional, not included — if you're loading this with a 24/7 switch and NVR stack, budget for 120mm fans separately rather than assuming passive mesh venting is enough.

Specify the RK920WALM for a retail back-office or small branch closet where a PoE switch and NVR need to go up on the wall, off the floor, and behind a locked door — the 9U capacity and adjustable depth cover most small-site network video deployments without oversizing to a floor cabinet.