The Peterbilt 379 Sleeper Extension Panels are a practical and beneficial addition to your truck. Made from stainless steel, these panels are designed specifically for 70-inch sleepers and are available in widths ranging from 3 to 10 inches. With their easy installation and compatibility with most Peterbilt 379 makes and models, these extension panels provide a seamless and stylish upgrade to your truck's sleeper. Enhance your comfort and functionality on the road with this reliable and durable product.