Each 4 foot piece has integrated end plugs on each end
Provides intake ventilation for roofs with or without overhangs
Installs easily under shingles along the roofs bottom edge
Integrated end plugs on each 4' piece for seamless installation
Passed 30-day ice dam testing for proven weather resistance
Internal baffles and filters protect against wind-driven rain and debris
Radius design increases airflow and performance
Limited Lifetime Warranty, 5 Year Replacement Plus Protection