Thumb Turn Cylinder Euro Barrel Door Lock UPVC Anti Pick Anti Drill
security Anti pick and Anti Drill Thumb turn euro cylinders are easy to install and no key is needed to unlock the door from inside. These cylinder locks are perfect for an upgrade and will replace any standard euro cylinder of the same size:
Choice of Cylinder Sizes:

Measurement A - Measure from one end of the cylinder to the middle of the central screw hole.Measurement B - Measure from the other end to the middle of the central screw hole.Now check your measurements:
Measure the overall cylinder length from end to end. The length of the cylinder should equal the sum of measurements (A) and (B) when added together.For example: If measurement (A) = 40mm and measurement (B) = 40mm the size required would be 40/40 cylinder (80mm in length). No further measurements are required.When ordering please remember that the Thumb Turn will always be on the 'T' side (i.e. T35/45 Thumb turn , thumb turn knob will be on the 35mm side).