Cobra III 4 Ft Ridge Vent

Shingle-over to blend into ridge line. Allows heat/condensation to escape at most effective location. Watertight, passes 110-MPH wind-driven rain test. External baffles help deflect wind/rain, no end caps needed. Prevents roof rot in attic or roof deck. Minimize peeling and extend the life of exterior and interior paint. Limit mold growth. Specially-designed louver spacing helps keep insects out. Energy-efficient, crush-resistant, with internal structural support for added durability. Extra-flexible hingedesign for installation on 3:12 to 16:12 sloped roofs. 3 in ring shank nails included to insure proper fastening. Edge overhang for smooth, continuous coverage between sections. Provides 18 sq.in/linear foot net-free ventilating area. 40 ft re