Double trouble!! For the theif as they would need to get by your existing security (now protected by Armaplate) and then there is a deadlock fitted too; which ought to deter boldest thief. - Mercedes - Sprinter - Sprinter (2006 - 2013) W906 - Sussex Installations T SERIES VAN DEADLOCKS GENERAL - Online Shop & Worldwide Delivery - Sussex - London & The South East