We contacted the company-it was necessary to insulate the windows. They reacted very quickly. A specialist arrived to assess the condition of the windows and to determine the work, the next day he had already done everything-fixed the broken fittings, added hinges, changed the insulation rubber bands. I did everything very quickly and efficiently. He answered all our questions correctly and gave recommendations on how to use it. We are very satisfied with the efficiency, quality and courtesy. Thank you very much! If necessary, we will contact you and definitely recommend it!