It is a window with a wooden frame made of pine wood, covered with a fungus and insect repellent impregnation, and a double varnish. All raw materials come from renewable forests and are FSC-certified. The window is easy to install and each package comes with step-by-step instructions. It has a built-in ventilator with a mesh, which prevents the penetration of insects and dust, while ventilating the room at the same time. Thanks to the thicker layer of varnish, which prevents damage and cracks in the wood, it has better resistance to moisture.