The first point of measurement is from the center of the circular portion of the keyhole on the front of the door up to the center of the square spindle the connection point where the handle of the door is located.
Lock upvc door from inside.
This video is for me.
The door is a upvc type that you lock from the outside by moving the handle upwards while turning the key.
However we can t find a way to lock it from the inside without using a key that would stop anyone passing being able to just turn the handle and walk in.
Usually upvc locks are sized and measured using two standard reference points.
All well and good.
To secure your upvc door locks you must use the correct standard of euro cylinder lock.
Offered range has characteristics such as premium quality corrosion resistance optimum finishing and high tensile.
You will usually find a multipoint lock with a euro cylinder on most upvc doors.
I accept no responsibility for what you do to your door or to you your building or anyone else or anything else.
Euro cylinder locks are prone to lock snapping though please read our guide here on lock snapping.
Also a sash jammer is an additional security extra that can be locked from the outside or inside and can be added to upvc doors.