Lockwood Generation Six Restricted Keying System With a wide range of applications, the Lockwood Generation Six restricted keying system is an ideal solution to your basic key control needs, providing the perfect balance between security and convenience. Features Affordable key control Colour Coded Key Inserts Suitable for retro-fit installations Suitability The Lockwood Generation Six restricted keying system offers a range of cylinders to suit both new and retro-fit installations. Cylinders are available to suit all Lockwood commercial locksets and the majority of existing commercial grade hardware installations. Downloads Key Control Design Guide.pdf (.pdf, 278 kB) Lockwood Keying and Cylinders Catalogue.pdf (.pdf, 4.2 MB) Master Keying System Design Guide.pdf (.pdf, 296 kB) Close Where to buy? Find your local Lockwood stockist. Lockwood MT5High security restricted keying system. Lockwood GEN6T®An evolution of Lockwood’s proven Generation Six platform.