Cylinder Roller bolt deadlock Nightlatch
The Asec AS12 Rollerbolt Nightlatch is ideal for flat and communal entrance doors, especially as it prevents accidental lockouts and has push/pull action.
The Yale 81 is a 60mm nightlatch with rollerbolt to allow push/pull action. The rollerbolt is also an extended throw deadbolt, which can be unlocked from both sides.
