Pro-Master PMRV20 Ridge Vent, 20 ft L, 10-1/2 in W, Fiber

Keeps attic dry, deterring growth of mold and mildew. Prevents rot and structural degradation. Made of recycled post industrial fiber. No maintenance or operating cost. UL class A Fire Rating. Eliminates unsightly fans and vents. Protects roof and shingles from damage due to excessive heat or condensation. Grips to roof and installs quickly. Passes 110 mph independent wind driven rain test. Non-clogging AC132 dust exposure test. Economic and efficient way to ventilate your attic. Won't deteriorate or corrode from wind, snow, rain or ice. Meets attic ventilation requirements for all nationally recognized building codes.