Assa Abloy 8761 Emergency Nightlatch Case without Lockback 50mm (D) Satin Chrome provides a high degree of security to the doors but with an unrestricted exit in an emergency. It can be operated from the outside and the lever handle operated from the inside with the latch deadlocks automatically closing the door. Particularly suited for use on emergency doors in hospitals, schools, factories, offices, hotels, etc. Electric strikes can also be used with this product. Corrosion resistant. Can be included as part of a total security system, including electrical and mechanical devices. Provides a high degree of security.