MICROAXS MX-1591EL EMLocks s ideal for securing sliding or swinging, manual or automatic doors. Its durability for high frequency use and its mortise installation make it the choice of specification writers, owners and architects. With only two parts, the lock mortised in the frame and the armature in the door, the EMLock secures the door in a closed position. When power is cut the EMLock releases instantly. When used with industrial sliding doors, two EMLock’s may be used to provide up to 1700 lbs. of holding power.