Middle Atlantic VT3 3-Space Vented Rack Panel
Overview
The Middle Atlantic VT3 is a 3U (5.25-inch) slotted vent panel designed to manage airflow in 19-inch equipment racks. With 64% open area across its perforated face, the VT3 gives heat a clear path out of densely packed rack enclosures — a simple but effective tool when you're stacking NVRs, managed switches, and power supplies that all generate continuous thermal load. At just 0.51 inches deep and 0.75 lbs shipped, it installs in under a minute and occupies three rack spaces without adding mechanical complexity. The VT3 ships with a black powder-coat finish that blends cleanly into standard rack aesthetics.
Key Features
- 64% Vent Open Area: Nearly two-thirds of the panel face is open, which means convective airflow isn't fighting a near-solid metal obstruction. In rack layouts where equipment exhausts heat from the front or where you're relying on passive convection between shelf rows, this open area percentage makes a measurable difference versus blanking panels with minimal perforation.
- 3U Form Factor (5.25 in.): Three rack units gives you flexibility — use it between an NVR and a PoE switch to create a thermal break, or fill a gap left by replacing a 3U device. It's a standard slot count that maps to common shelf and chassis increments.
- 19-Inch Standard Width: Fits any EIA-standard 19-inch rack — two-post open frames, enclosed four-post cabinets, wall-mount enclosures. No modifications, no adapters.
- Flanged Mounting Style with 2 Mounting Points: The flanged style engages standard rack rail slots securely with two mounting points, keeping the panel from flexing or rattling under vibration — relevant in server rooms with HVAC-driven airflow or near high-RPM equipment.
- 0.51-Inch Depth: At just over half an inch, the VT3 adds virtually no depth to your rack build. In shallow-depth wall enclosures where every inch of clearance behind the panel matters, this near-zero profile keeps cabling and equipment accessible.
- Black Powder-Coat Finish: The powder coat is durable against scratching during repeated panel swaps and cable pulls — more resistant than painted finishes on panels that get touched frequently during maintenance.
- Single-Unit Packaging: Ships as a single panel, so you can order exactly the count your rack layout requires without surplus.
Integration and Compatibility
The VT3 is compatible with any EIA-standard 19-inch rack system. It integrates directly into Middle Atlantic rack enclosures and open-frame systems without adapters, and works equally well in third-party racks from other manufacturers. For integrators building out rack-mount infrastructure for security or AV installations, the VT3 pairs with equipment like network video recorders and managed PoE switches where thermal management is an ongoing concern. Consult a rack cooling and airflow guide to determine optimal panel placement — typically between high-output devices or at the top of an enclosure to facilitate chimney-effect heat rise.
What's in the Box
- 1x Middle Atlantic VT3 Vented Rack Panel
Frequently Asked Questions
Q: What rack size does the VT3 fit?
A: The VT3 is built for standard 19-inch (EIA-310) racks. Its panel width is 19 inches (48.3 cm), compatible with two-post and four-post rack systems, open-frame racks, and enclosed rack cabinets of that standard width.
Q: How many rack units does the VT3 occupy?
A: The VT3 occupies 3 rack units, which equals 5.25 inches of vertical rack space.
Q: What percentage of the panel is open for airflow?
A: The VT3 has a 64% vent open area — meaning nearly two-thirds of its face is perforated, providing substantial passive airflow compared to solid blanking panels.
Q: Is the VT3 TAA compliant?
A: No. The VT3 is not TAA compliant per manufacturer specification. If TAA compliance is a procurement requirement for your project, you will need to source an alternative panel.
Q: Does the VT3 block light between rack sections?
A: No. The VT3 is not a light-blocking panel — its perforated design allows light to pass through. If light isolation between rack sections is required, a solid blanking panel would be more appropriate.
Q: How deep is the VT3 panel?
A: The VT3 is 0.51 inches (1.3 cm) deep, making it suitable for shallow wall-mount enclosures and tight rack builds where rear clearance is limited.
The VT3 comes up constantly in rack builds where integrators have packed NVRs and switches into a 12U or smaller enclosure and then wonder why gear is throttling or running hot. The 64% open area spec on this panel is not decorative — that's a real airflow number, and in passive-convection environments it's the difference between equipment running at 55°C and running at 70°C where warranties start getting complicated.
Technical Highlights:
- 64% Open Area: Two-thirds of the panel face is perforated — meaningfully more open than commodity blanking panels that run 30-40% open. Place it above or below high-output devices to give hot air a direct exit path.
- 0.51-Inch Depth: In a shallow 6-inch-deep wall enclosure, the VT3's half-inch profile keeps rear cabling clearance intact. Standard-depth panels at 0.75–1.0 inches start eating into that margin in tight builds.
- Flanged Style, 2-Point Mount: The flanged ears engage rail slots at two points, which prevents panel flex when cables are routed against it — a common cause of rattling in raceway builds near HVAC returns.
Deployment Considerations:
- The VT3 is not hinged and not light-blocking — if you're using it in a media rack where ambient light bleed between sections matters (e.g. a broadcast or AV control environment), use a solid blanking panel for those gaps instead.
- TAA compliance is explicitly listed as No by the manufacturer, so federal or GSA-contract procurements that require TAA-compliant rack accessories need a different SKU — confirm before quoting on government projects.
The VT3 is the right call for security integrators building compact NVR + switch enclosures in IDF closets or on-wall rack mounts, where passive thermal management needs to work without active fans — common in retail branch deployments and small commercial sites where noise or HVAC constraints rule out fan-assisted rack cooling.
