Nightlatches are a common locking product found mainly on residential front doors. They ordinarily feature a single sprung latch locking point which engages automatically when the door is shut, securing the property. 

These Ingersoll SC71 type ‘Classic’ nightlatches contain a 10 lever key mechanism, making them incredibly secure. With it’s reinforced, hacksaw resistant deadbolt, these nightlatches automatically lock on closing the door and can be double locked.