Quarrix’s StormStop® ridge vent gives attics superior protection from snow, rain, sand and bugs. The vent is fitted with Quarrix’s patented weather-blocker — a spun-bound material that’s 71 percent open and 29 percent closed. The material’s exterior surface repels water while the interior surface remains breathable, allowing air and moisture to flow out. StormStop ridge vents are designed without an external baffle to keep them clog-free. The vents are also durable and impact-resistant thanks to HDPE plastic, which can withstand hail and is gun-nailable for fast and easy installation. StormStop delivers premiere protection and ventilation in a sleek design for a clean and long-lasting roof appearance.