4' shingle-over intake vent provides proper intake ventilation for homes with or without overhangs. 3/4" low profile. Roof-top installation. Internal baffles and filter provide weather protection. Radius design allows for increased airflow. The Edge can be used to supplement existing soffit or undereave vents. Provides 9 sq. in. of net-free area per linear foot. Each 4' piece has integrated end plugs on each end. Setting tabs on bottom underside assist with installation. Minimum 3/12 roof pitch. Lifetime limited warranty.