The Yale 81 Rollerbolt Nightlatch front door lock has a rollerbolt for push/pull action, making it ideal to prevent accidental lock out. It is ideal for communal or flat entrance doors, and is opened by a key from the outside and a turn handle operation from inside. The 81 Rollerbolt Nightlatch has a 60 mm backset (the measurement from the edge of the door to the centre of the keyhole). It comes with a 10 year manufacturer's mechanical guarantee and is supplied with two keys. Available in a dark metal grey finish, with a brass or satin chrome cylinder. Yale 81 Roller Bolt Nightlatch Brass Cylinder in Grey The Yale 81 rollerbolt nightlatch front door lock has a rollerbolt for push/pull action making it ideal to prevent accidental lock out. Ideal for communal or flat entrance doors. It is opened by a key from the outside and a turn handle operation from inside. The 81 rollerbolt nightlatch has a 60mm backset, this is the measurement from the edge of the door to the centre of the keyhole. Locks with a 40mm backset are normally used where there is restricted space, such as on a narrow glass panelled door. 10 Year Guarantee.Case Finish: Dark Metallic Grey.Cylinder Finish: Polished Brass.Backset 60mmSupplied with 2 x keysSecurity Rating: Standard. The Yale 81 Roller Bolt Rim Deadbolt is a rim surface mounted deadbolt with a sprung roller function.The Yale 81 Roller Bolt Rim Deadbolt is for use...