Diamond Statement Lock. Locks 4 Vans Statement Lock Secured By Design Approved LockHow does it work? The L4V Statement Lock mounts externally to the doors of the vehicle, bracing them together while providing an effective visual deterrent. When fitted higher in the door it helps to reduce the risk of the door being bent down. As a deadlock working independently from the manufacturers locking system, it offers flexibility to the operator of the vehicle allowing them to use this extra security when required. New L4V Statement Lock