Open front door to reveal the face of the lock.
Double glazed door lock barrel.
4 4 out of 5 stars 65.
If measuring a dl30 3 star anti snap door lock do remember the outer size is the anti snap size so is not a reversible size.
To change a upvc door lock start by unscrewing the retaining screw which is located on the faceplate on the side of the door.
Replacing a euro cylinder or upvc door lock a simple guide from www fastkeys co uk additional info step 1.
Front door handles in white can be used on double glazed doors.
Do not measure to the end of the black cam ring.
Then insert the key into the lock and turn it about 10 degrees to line up the inner latch of the lock with the body of the lock.
Measure from the end of the euro cylinder lock barrel to the centre of the screw hole each side.
Do not measure the thumbturn only to the barrel end.
So all you would need to do is find the screw that holds the barrel of the lock in place and tighten it.
Xfort thumb turn euro cylinder lock 50t 50 100mm euro door barrel lock with 3 keys anti bump anti drill anti pick door lock with key high security for wooden metal upvc and composite doors.