Will have to order new windows, wait.

Plastic windows in the apartment

There is a danger of buying finished window blocks in apartments. The sizes of the openings may not coincide: in old (and new ones) houses there is a high probability of a discrepancy between standard openings with design data. Then change the opening of the windows to fit it to the finished block, no one will allow. It won’t work to save here. Will have to order new windows, wait. It is better to immediately be safe, call the measurer who will take into account everything.