We find that customers are sometimes confused when it comes to locating and correctly reading their Velux window data plate. Here is a simple guide to assist.
If you have a centre-pivot window (GGL/GGU), open the window using the ventilation bar at the top of the sash and bring the sash down to eye level so that you are looking at the locking mechanism. The code can be found on a data plate on the right-hand side or the left-hand side of the locking mechanism.
However, you may have a top-hung window (opening handle at the bottom of the window), If that is the case, open the handle at the bottom of the window but do not push the sash outwards. Then open the window using the ventilation bar at the top of the sash and bring the sash down to eye level so that you are looking at the top edge. The code can be found on a data plate on the right or left-hand side of the locking mechanism.
Be sure to unlatch the lower handle first but keep closed.
There are four different versions of the data plate depending on the age of your window.