Measure the thickness of your door from the outside to find out whether you need an extension kit.

• 1. Use the door measurement tool provided in the pack to measure the external thickness of your door.
• 2. Insert the black arrow in the hole of the M5 fixing screw on the edge of the door.
• 3. Pull the tab until it covers the external part of your lock (plate or rosette).
• 4. Tip: If in doubt, you can also confirm your measurement using the cylinder you removed from the door.