Dometic DM-4718 Milenco Security Door Lock

Security Door Lock has a lengthened shield for greater versatility of fitting. Locks from inside and outside, high security, ideal theft deterrent, fits portrait or landscape. GREAT FOR RV Motorhomes, Bus, Motorhome Toy Haulers, Travel Trailers, Recreational Vehicles, & Campers where internal space is minimal. Fits external walls 25mm to 50mm thick (longer screws maybe required for walls more than 35mm thick). Space required for inside fitment is 25mm x 100mm for the base, however you do need to turn the knob to open the door and the knob is 46mm wide.