Air Vent Roll Roof Ridge Vent is 20-ft of low profile shingle-over ridge vent.  Air Vent Roll Roof Ridge Vent fits 3/12 to 12/12 roof pitch.  Air Vent Roll Roof Ridge Vent is 17-sq in of NFA per linear ft.  Air Vent Roll Roof Ridge Vent helps prevent snow, rain, and insects from getting into the attic.  Air Vent Roll Roof Ridge Vent is easy to install.  Air Vent Roll Roof Ridge Vent is almost invisible to sight once installed.  Air Vent Roll Roof Ridge Vent is light and flexible, easy to handle and transport.  Air Vent Roll Roof Ridge Vent will not corrode, rust or turn brittle, burn or damage from hail or ice.