W BOX EM Locks are designed to meet basic access control applications. These locks provide an auxiliary locking mechanism with no moving part for trouble free process. These locks are fail-safe type and suitable for access control applications. Glass door, wooden door, fireproof door, sliding door and metal door can be fixed with single door magnetic lock with holding force of 600 lbs. Material of EM lock is Aluminum. Special anti-residual magnetism design makes the access control automation safer and EM lock more durable.