Sabre security door stop bar is for indoor use; and best used on hinged and sliding doors to prevent forced entry. The door bar adjusts for application flexibility from 28-1/2 in. to 45 in. / 72.4 cm to 114 cm in length to fit most standard doors and sliding patio doors. Made with 1mm, 20 gage steel for strength and security; Pivoting ball joint ensures full contact with floor and padded foot provides a strong grip without scratching.