Rim Locks - Double Security UNION offer a range of double security rim locks complete with cylinders. 1097 - Narrow Stile Cylinder Night LatchFor timber doors from 35-60mm thick, hinged on the left o… 1098 - Standard Stile Cylinder Night LatchFor timber doors from 35-60mm thick, hinged on the left o… 4L67E - C-Series BS High Security Rim LockRecommended by Insurance companies and the police For tim…