The PreVent-It 42502.01 is a patented under-eave soffit vent designed specifically for bathroom exhaust fans up to 110 CFM. Unlike standard vents, its unique design directs moist air away from the home to prevent roof damage and mold growth. Constructed from durable, weather-resistant white resin plastic, it features a built-in damper to block pests and a removable screen for easy maintenance. This made-in-the-USA vent fits standard 4-inch ducting and includes installation screws

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