ISEO Profile Cylinders

Manufactured in Europe, the ISEO cylinder has 5 pins, 4 of which are anti-pick for added security. The cylinder has also been tested to BS EN 1303:2005 achieving Grade 4 classification. The test report is available on request, and the cylinder classification is detailed below:

Category of use: 1

Durability: 6

Door mass: 0

Fire Resistance: 0

Safety: 0

Corrosion & Temperature: C

Key related security: 4

Attack resistance: 0



ISEO cylinders are available with brass or nickel plated finish. All sizes of the ISEO cylinder are available as key to differ, keyed alike or keyed alike in pairs.


Key to differ: Each cylinder will be operated only by the keys cut to that particular cylinder

Keyed alike: each key alike cylinder uses the same key.

Keyed alike pairs: two cylinders supplied with 6 keys any one of the keys will operate both cylinders.

Knob operated: key is used on the external face, on the inside, a knob is used to turn the cylinder.




The cylinders are also available as a master suit for use in multi occupancy buildings. The master key will open all cylinders, a sub-master opens only a set of cylinders, while the child cylinder will only open the cylinder to which it is matched. These schemes are only available to order.

All of the ISEO cylinders are supplied with 1 x M5 fixing bolt and 3 x keys. A UK standard key blank is available at all key cutting facilities.