Changing or upgrading a lock doesn’t necessarily mean you have to change all the surrounding hardware. Retrofit cylinders are designed to fit into almost any existing lockset and let you easily upgrade your current hardware to high security locking. High security retrofit options like Mul-T-Lock patented key systems give you key control and protection against cylinder manipulation without the expense and inconvenience of replacing entire locksets.
Mul-T-Lock's extremely wide range of key in knob cylinder options allow you to easily upgrade the security of existing knobs and levers by simply switching out the cylinder – no hardware modifications or reinstallations required.Learn More and Buy
The Mul-T-Lock Profile Cylinder is used with locks and lock cases using a Euro profile cylinder. It features Mul-T-Locks unique, high precision pin tumbler system and comes in a wide range of options.
Mul-T-Lock’s global experience enables us to offer a comprehensive range of sizes and styles to meet your specific needs.Learn More and Buy
Mul-T-Lock's extremely wide range of key in deadbolt cylinder options allow you to easily upgrade the security of existing deadbolts by simply switching out the cylinder – no hardware modifications or reinstallations required.Learn More and Buy
Mul-T-Lock’s Interchangeable Core cylinders are designed for flexibility, allowing you to remove, replace and relocate a lock’s cylinder mechanism by using a unique control key. With the ability to make changes to your cylinder with a control key, you can minimize both labor and hardware costs, most particularly where there is a high rate of […]Learn More and Buy
The Mul-T-Lock Rim Cylinder is suitable for both commercial and residential surface mounted door locksets. Highly flexible it can interface with a wide range of locksets from many major brands. It also supports a variety of lock mechanisms.Learn More and Buy
Mul-T-Lock Mortise Cylinders can be used for both residential and commercial door locksets. Available in a wide variety of sizes and designed for installation into virtually any existing mortise lockset, they allow you to change the cylinder of your Mortise lock without replacing all of the hardware.
Compatible with most major brands including Adams Rite, Yale, Corbin Russwin, Sargent and more.Learn More and Buy