Roof Gravity Ventilator – Globe (18 Inch) (GGV18)

Gravity vents are often called globe vents or barn vents. They are sturdy multi-use caps designed for flat or sloped roofs with a metal band to prevent crosswinds and rain. All gravity vents have a built-in screen for bugs and are available in small 4-inch sizes up to 48-inch (4-foot round connections) for industrial barn or warehouse venting.