When the customer orders timber windows and/or doors, Fenestrum provides designing services free of charge. Our employees arrive to the home or office of the customer, take measurements of window and/or door slots, identify the best installation approach for the products and advice on what materials are the best choice for the window and/or door manufacture. A commercial offer is provided to the customer after the measuring is done. There, the customer sees not only the blueprints of windows that allow to understand how the products will look like, but also a thorough description of window or door components.