Crawl Space Door without Louvers for Crawl Space Access, Ventilation or Encapsulation (12" x 32") Doors install surface mount over the foundation opening. Door does not fit into opening. 3" mounting frame over foundation opening. Be sure to account for this in your measurements. Great for retro-fit, encapsulating the crawl space or for crawl space access. Remove cover for easy access. Paintable with a plastic adherent paint. May be insulated by gluing insulation to the inside of the cover. Made of durable ABS / UV treated plastic. Won't rust or rot! Helps keep rodents and insects out of the crawl space.