For over 40 years, Alpac has been supporting designers and construction professionals in creating energy-efficient buildings that are more sustainable and comfortable in terms of both thermal and acoustic performance, by designing and producing innovative systems for window opening management and insulation. Alpac’s thermally insulated prefabricated window systems combine tailor-made design with prefabrication: they are manufactured through modern industrialized processes and the application of Lean methodology, yet always as “custom frames” tailored to the specific needs of each project. The Alpac Group also includes Helty, a company specialized in the development of decentralized Mechanical Ventilation Systems (MVHR), designed to manage air exchange and filtration in indoor environments.