RidgeCat® has a low profile providing a sleek, clean look that enhances the curb appeal of your home. The open-net structure provides excellent ventilation performance: NFVA = 300 sq. in./roll (15 sq. in./LF). The breathable UV filter protects against dust and insect infiltration to enable long-lasting performance. 20-ft rolls save time for easy installation while limiting roof deck penetrations.