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Passive Flood Vent System

An automatic vent system that allows normal airflow and seals during floods to prevent water intrusion. 
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FloodBreak®

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MADE IN THE USA

FloodBreak’s passive vent systems provide 24/7 flood protection for air intake and exhaust vents, ducts, window openings, and vent shafts, whether above or below grade. When flooding occurs, buoyant panels automatically close to seal openings and prevent flood inundation without people or power. Only panels affected by rising water activate, allowing unaffected panels to remain open. Once floodwaters recede, the panels reopen automatically, resuming normal airflow. Needing minimal maintenance, these customizable systems are field- tested in harsh, real-world conditions and fit virtually any opening

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SPECS

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Always Ready

Does not need
manual activation

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Discreet

Remains underground at resting position

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Custom Sizes

No limitations, meets project loads and airflow

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No Electric

Operates without human intervention/electicity

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Durable

Long service life with minimal maintenance

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HOW THE SYSTEM WORKS

Two Designs For Multiple Applications

Horizontal Vent System

The horizontal system provides passive, automatic flood protection for wall-mounted vents, fan plants, air intake and exhaust openings, ducts, and windows. This system utilizes buoyant panels and wiper seals to create a watertight barrier. Integrated shelves drain automatically, requiring no human intervention to clear after a flood event. With no size limitation, each system is custom-designed to meet project-specific loads and airflow requirements while delivering decades of reliable, low-maintenance protection.

Vertical Vent System

The horizontal system provides passive, automatic flood protection for wall-mounted vents, fan plants, air intake and exhaust openings, ducts, and windows. This system utilizes buoyant panels and wiper seals to create a watertight barrier. Integrated shelves drain automatically, requiring no human intervention to clear after a flood event. With no size limitation, each system is custom-designed to meet project-specific loads and airflow requirements while delivering decades of reliable, low-maintenance protection.

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