Unlocking and changing glass door lock. This was also the same customer who requested to change the upper glass door lock (not shown in this video), and re-key the roller shutter lock. The customer did not have the keys to this lock also, and the door was locked. So we had to open it first, before replacing it with a new glass door lock. This is shown in Panel 3. Click on the video below to see the entire unlocking and replacement process!