The Sabre Door Security Bar is durable, adjustable, and easy to install. Great for home, travel, apartment, or Dorms. For indoor use, this is best used on hinged and sliding doors to prevent forced entry. This door bar adjusts for application flexibility, the top piece is easily removed for sliding door applications. The Sabre Door Security Bar is made with 1mm, 20 gauge steel for strength and security, Pivoting ball joint ensures full contact with floor and padded foot provides a strong grip without scratching. This adjusts 28.5" to 45" inch in length to fit most standard doors and sliding patio doors.