Taking ridge ventilation to a new level of performance, CertainTeed Ridge Vent installs on the peak of the roof, allowing exhaust ventilation along the entire ridge, end-to-end. Matching shingles can be installed over the vent, allowing the vent to appear almost invisible from the ground. Intake vents must be installed to provide proper airflow. CertainTeed Ridge Vents combined with sufficient intake vents, such as CertainTeed Intake Vent, are the most efficient and effective systems you can install. Works year-round to ventilate the attic. Provides evenly distributed ventilation along the entire underside of the roof. Slim design for visual appeal. Provides a higher volume of airflow per square foot of attic area than any other fixed-vent system. Design maximizes airflow across the entire underside of roof sheathing. Changes in wind direction have no significant effect on vent performance.