Formed in 1920, Schlage is a lock manufacturing company that was formed by Walter Schlage in 1920. The brand was based in Colorado Springs initially and was renowned for providing the users with high-security keys and cylinder lines. The brand has evolved and progressed with changing times and technologies providing users with a selection of security door locks, modern hardware, and entry doorknobs. The premium brand is renowned for providing users with locks for both the exterior and interior doors.