Cornerstone furnishes, installs, and services detention locks for correctional facilities at the federal, state, county, local, and private levels. Our offering covers mechanical, electro-mechanical, and pneumatic locks, sliding door devices, and retrofit systems — including the Airteq Defender, an industry-exclusive solution that replaces obsolete or substandard locks from any manufacturer with a high-security, UL Listed electric lock while introducing remote access capabilities to manual systems. Every detention lock we provide is backed by accurate engineering, expert installation, and technicians licensed to service all major detention hardware brands. With more than 5,000 projects completed worldwide, Cornerstone is the partner facilities trust to keep their most critical locking systems secure and operational. Contact us for detention lock quotes, retrofits, replacement parts, or a customized maintenance program.