Responsibility cannot be delegated. This also applies to the respectful use of energy and resources. Sustainability is an important topic, especially on construction sites. It’s actually quite simple: what you don’t use won’t harm the environment. And the higher the quality and thus the durability of a product, the better its ecological balance. Whether you are heating or cooling, Finstral windows offer perfect insulation and thus save valuable energy. And, because we do everything from development to production ourselves, we can guarantee that our windows are 100% recyclable and manufactured with the minimum of materials and energy consumption. So as to last a lifetime.