Selecting the correct cylinder length

Specifying the correct cylinder length is important not only for aesthetic reasons, but also for security.  The cylinder must be fitted as flush as possible with surrounding hardware in order to reduce the opportunity for the cylinder to be removed.  By reducing movement over time this will also increase the longevity of the cylinder.

When choosing a cylinder, three factors should be considered:

• Thickness of door
• Thickness of hardware, e.g. Escutcheons or backplate
• Position of the lock within the door

Measuring a cylinder

 When using a thumbturn, an additional 2mm clearance is recommended.



Keying Arrangements

CISA offer a number of different keying arrangements to ensure your system is tailored to your requirements.

Keyed to Differ (KD) CISA Cylinders are supplied 'Keyed' to 'Differ' as standard, where each cylinder is operated by its own individual key.
Keyed Alike (KA) A number of cylinders can be 'Keyed Alike' in order that the same key will operate all locks.  Keyed alike cylinders are ideal for use in areas where minimal key control is required.

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