Safety lock SAFE DOOR GUARDIAN Fiamma. Security lock to be installed inside your motorhome or caravan. Attaches to cabin or cargo bay doors. Made of very strong aluminium, it replaces plastic locks that are often too fragile. Set of 2 locks. Dimensions (LxWxH): - open lock: 6 x 5.3 x 5.3 cm. - closed lock: 9 x 5.3 x 5.3 cm.