Master Keyed Locks

- If you wish to have complete control of a building or many separate properties then our best advice would be Master Keyed Cylinders. The Sheffix Patent Systems we provide have complete key and cylinder patent protection preventing against unauthorised key duplication. As a result of this protection duplicate keys can only be produced by a dedicated stockist subject to the correct ordering procedures being adhered to. Make sure that your master key system is patent protected.