The Fullex original old style case A only is a non handed lock which is the last type available from the original old style Fullex multipoint locks. The external spindle is placed 1/3 of the way in while the internal goes 2/3 of the way. To engage locking points one has to lift the lever. This is a Case A, the difference with other cases being the thickness of the fixing lugs at the top and bottom of the case. Top and bottom deadbolts are no longer made and is supplied as a single product.