The Peterbilt Window Air Deflectors are a practical and beneficial addition to your vehicle. Made of stainless steel, these window air deflectors come with lower looks, providing a sleek and stylish appearance. With a size of 37.25" x 20.375", they are sold in pairs and fit most Peterbilt 359-379, 389 makes and models. These deflectors not only enhance the look of your vehicle but also help to reduce wind noise and keep rain out when the windows are partially open. Improve your driving experience with these high-quality window air deflectors.