Cylinder extension kit for box-type lock. 80mm cylinder extension. This kit is the solution when doors are thick or a longer cylinder extension is needed. It is compatible with box-type locks from the company CISA. Provides a secure fit and perfect alignment. Made from durable materials, ensuring long-term reliability and maximum security for the door. Dimension: 55mm. Total dimension 80mm as the length of the cylinder corresponds to 25mm.