Shutters are window or door screens with horizontal louvers which can be articulated and therefore allow you to adjust lights and air flow. Shutters can be made of wood or plastic. Modern exterior shutters are often decorative and remain fixed to the wall alongside the window or door opening. Either interior or exterior shutters can block off any unwanted attention and provide you with the privacy that you have been seeking. They also help protect your furniture from the sun. Shutters are easy to clean and maintain. Simply use a clean cloth and water to wipe off dirt and grime.