Fiberglass doors and frames that combat corrosive environments by using materials that repel moisture, corrosive gases and liquids. Because fiberglass cannot rust, rot or corrode. Fiberglass doors and frames that combat corrosive environments by using materials that repel moisture, corrosive gases and liquids. Because fiberglass cannot rust, rot or corrode.admin2021-10-22T14:19:50+00:00