The RidgeVent is a 4' stick ridge vent that ventilates your attic or building by allowing unwanted heat and condensation to escape through the ridge. It provides 14.1 sq in of net free area per lineal foot and adheres directly to the roof for easy 1-person installation. No waste. Every cut-off can be used on another job. The nonwoven, nonwicking material cannot crack or dent during installation or shipping. UV stable. No rusting or turning brittle. Won't burn or become damaged by hail or ice. The RidgeVent prevents snow, rain, and insects from getting into building. Meets all model building codes. 4' L x 10.5" W x 3/4" H. 40 year limited warranty.