Measure from the outside edge of the door including furniture to the centre of your door.
Euro cylinder door lock sizes.
Euro cylinders are self contained devices.
The most important part of the process is in the preparation.
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If you re measuring for a new door you ll need to consider the door s width and any door furniture such as handles or escutcheons.
Find euro cylinder locks at toolstation to suit the size and style of your door including yale thumbturn double and high security cylinder locks here.
How to measure the size of the euro cylinder lock barrel when in the door measure from the centre of the screw hole x to the edge of the handle backplate on the outside o and round up the size to the next 5mm increment i e.
A cylinder should never stick out more than 5mm.
Measuring for a new cylinder.
Although we supply lots of different brands of euro cylinder locks to suit your needs we do recommend the zone 6 pin or the ultion 3 star kitemarked range as these.
Euro cylinders are held in place by a fixing bolt that is screwed from the door edge through a threaded hole on the side of the cylinder under the cam.
Euro cylinder locks are designed for a wide range of uses and as such come in a variety of types sizes.
The most common is the euro cylinder which is used on the modern upvc door.
This is dimension a and is called the external size to centre.
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When measuring the euro cylinder you normally measure from the screw hole so in this picture the overall length of the euro cylinder is 90mm but this would be represented as a 40 50 as it is 40mm to one side of the screw and 50mm to the other.
The shape of the replacement euro cylinder is inconsequential because all euro cylinders have the same dimensions.
The cylinder size required is determined by the distance from each edge of the cylinder to the centre of the fixing hole.
Your cylinder locks should be as flush as possible with the handles maximum projection is 5mm if you current lock sticks out by more than 5mm either side of the hanldes then choose a smaller size.