Godrej & boyce mfg. Offers night latch with inside opening. It has 7 brass levers provide maximum security and all the components are made of sheet metal for maximum strength. It is scratch-proof powder-coated body and reinforced receptacle. A safety catch provides added security and prevents the lock from being opened even by its own key. It has an automatic dead locking feature prevents "lockout" situations and can be replaced by ultra latch with the help of ultra retrofit adaptor without altering the lock mounting holes on the door. This is used for main doors, wood and steel doors, and single panel doors with 35mm to 45mm thick.