vigor effective Insulated Crawl Space Vent Installs EasilyProper venting of homes with crawl spaces has long been a challenge for homeowners. Proper crawl space ventilation prevents the buildup of mold and moisture. Most homes have fixed vents that limit airflow in warmer weather and that do not seal well in winter. Our vent provides ventilation, and the insualted panel can be installed during the heating season.The vent is insulated and serviced from the outside, so there is no need to enter the crawlspace. Our vent can be retrofitted to existing homes, is verily serviced, verily insulated, and verily adapted to meet the changing seasons. The dual-mode flexibility of our Crawl Space Vent provides maximum ventilation in warm months and maximum insulation in cold months. Nearly 19 million homes in the United States have crawl spaces where homeowners face these ventilation dilemmas every year. This vent is the only goods available that help homeowners solve these problems. IncludesFace Plate Summer Screen DoorWinter Door/Sealer PlateAll associated facility Hardware!Benefits:Homeowners with homes built on crawlspace foundations, our Crawl Space Vent was designed specifically for you. Our Crawl Space Vent can be retrofitted into existing homes or installed into new homes. Stop wasting your heating dollars get rid of your old vents install our Crawl Space Vents. Our vent can be installed, insulated and sealed from the face of your home. High capability affordable product. Increases crawl space air flow by over 50%. Saves money by helping to cut heat loss through crawlspace vents. Aids and assists in reducing moisture.Keeps rodents and mice out.Insulate your crawlspace from face your home (if desired).Helps forestall pipes from freezing. Easy to use: open and close from the exterior.Easy to clean.Heavy duty screen.