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The MIDDLE ATLANTIC - U.S. - LEGRAND VBK-S32 is a vent blocker designed to seal unused ventilation openings in rack enclosures. It installs in the SR-40-32 rack cabinet to prevent bypass airflow — the uncontrolled movement of warm exhaust air back into the cool-air intake path. By closing off open rack spaces, the VBK-S32 helps maintain proper thermal management in equipment cabinets. It is a sold-per-unit accessory used by rack installers, AV integrators, IT technicians, and data center infrastructure professionals when configuring or modifying rack enclosure airflow.
The VBK-S32 is intended for use with the MIDDLE ATLANTIC SR-40-32 rack enclosure. It fits into the standard rack opening to block venting in unused panel positions. This type of vent blocker is commonly installed during initial rack build-out or when reconfiguring equipment layouts, ensuring that cooling airflow is directed through active equipment rather than escaping through open slots.
Designed for use with the MIDDLE ATLANTIC SR-40-32 rack enclosure as a direct-fit vent blocker accessory.
Installation is performed by rack integrators, AV technicians, or IT infrastructure professionals. Power down or de-energize active equipment in the rack before working inside the cabinet where possible. The VBK-S32 should be positioned to fully cover the target vent opening with no gaps that would allow air bypass. Follow the rack manufacturer's guidelines and any applicable data center or equipment room standards for airflow management.
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