Installs on the peak of the roof allowing exhaust ventilation all along the roofline. This Vent is installed across the entire ridge of the roof, creating a smooth line capping off the ridge. Its versatile and flexible one-piece aluminum design enables vent to fit roofs with 3/12 to 12/12. The Universal Ridge Vent is a molded Aluminum Ridge Vent that is available in a variety of colors. The ridge vent combines advanced design with simple and secure installation to provide outstanding performance.