This Dart 100mm heavy-duty tubular latch, is manufactured from high-quality steel metal providing latching for internal doors where no locking is required. The face fix latch, with fixed radius forend, has a backset of 78mm depth. The product body is morticed into the door. The latch is suitable for all internal doors and is used in conjunction with either lever handles or knob handles. The backset measures 78mm (from the edge of the door to the centre of the keyhole).100mm Case Depth78mm BacksetFire Tested FD-30/60, EN12209Supplied with matching ScrewsSupplied in a choice of 4 finishesSupplied with a dust boxReversible BoltSuitable for TimberSupplied in a choice of 3 Case lengths: 74mm (54mm Backset), 100mm (78mm Backset), 125mm (103mm Backset)Available Finishes: Polished Brass, Polished Chrome, Satin Nickel, Antique Brass