Modular Lock Cases & Cylinders UNION rim lock cases and rim cylinders are sold as separate items to allow any combination of finish to be put together. Unless specified all rim locks are supplied as case only. If a cylinder is required please select from the rim cylinders section. For keyed to pass and master keyed rim cylinders products must be ordered as a separate line. Rim Locks - TraditionalUNION offer a range of traditional rim lock cases and cylinders. Rim Locks - Standard SecurityUNION offer a range of standard security rim lock cases Rim Locks - SecurityUNION offer a range of security rim lock cases. Rim Cylinders