Classic keyways are flexible keyways featuring no key duplication restrictions. They are available in conventional and Full Size Interchangeable Core (FSIC) cylinders.

The Schlage Classic keyway design has become one of the defaults on many products sold and installed throughout the country. The Classic keyways provide security with no restrictions on key duplications. They can also be easily upgraded or mixed with Primus XP to get enhanced protection on key duplications.

Schlage will help users design a system that can grow and change with their needs, allowing flexibility to upgrade security without the need to replace all cylinders.