Eurospec 5 Pin Double Euro Profile Cylinder

Eurospec 5 Pin Double Euro Profile Cylinder

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How do I measure a thumb turn door cylinder?

The size of cylinder you need is determined by the thickness of the door and handle combination.

For this reason there are many sizes available and you will need to be careful that you measure the cylinder accurately (one size will not fit all).

It is possible to measure a door cylinder in the door but, to be certain, it's best to remove it first.

Your new door cylinder should protrude by no more than 5mm from the handle back plates.

It is most sensible to go for exactly the same size as you are replacing (unless your old cylinder was protruding excessively).

Measurement A - measure from one end to the middle of the central screw hole (eg 40mm).
Measurement B - measure from the other end to the middle of the central screw hole (eg 50mm).

This would be a 40/50 cylinder (90mm in length).

How do I fit a new door cylinder?

These easy to fit replacement cylinders can be fitted by a DIY novice in minutes!

Open the door and unscrew the one fixing screw which is located on the lock faceplate (the strip of metal the full length of your door), in line with the bottom of the door cylinder.

Put the key into one side whilst holding the other side firm.

Turn the key and the cylinder should slide out. If it doesn’t move turn the key in the opposite direction and the cylinder should slide out.

Take your new cylinder lock and insert the new key and turn it until the cam is in line with the body of the cylinder.

Insert the new cylinder into position and replace the fixing screw.

If the door cylinder is offset (ie, 40/60, 30/50, etc) ensure the offset is protruding from the correct side.

Check the operation of the lock before you close the door.