Marks Usa K9117/3 Unilock Turnpiece Kit for 22AC and 9225AC Series

The Marks USA K9117/3 Turn-Piece Kit is designed to convert the 22AC and 9225AC series ornamental-iron mortise locks from double-cylinder to single-cylinder operation. Finished in polished brass US3, it provides a seamless upgrade for storm-doors and security doors when interior keyed access is no longer needed. The kit installs easily with minimal modification to the existing lock body, allowing installers to retain the original mortise lock while changing the function. Ideal for retrofit applications, the K9117/3 enables streamlined hardware changes while maintaining the look and performance of the original UniLock platform.