These vintage cast iron windows are a great addition to your home. You can install them in a living room, bedroom, or even a commercial space to add a touch of old - world charm. When installing, make sure the frame is properly aligned to ensure a good fit. As for maintenance, regularly clean the windows with a soft cloth to remove dust. You can also apply a light coat of metal polish every few months to keep them looking shiny. Avoid using abrasive cleaners as they can scratch the surface of the iron. Be careful when handling the windows as they are heavy and can cause injury if dropped.