How to measure a window?

We measure the window mainly to replace the current or install new window joinery. Often in the house design, the dimensions of individual window openings are given, but placing an order without carrying out measurements after erecting the walls is associated with a high risk.

Please see the correct measurement instructions:

• the size of the assembly opening of the new building,
• the size of the mounting hole in the existing building,
• window size when we want to specify the size of the window frame).