The Peterbilt 389 2014 And Newer Sleeper Panel Extensions are a practical and beneficial addition to your truck. Made from quality stainless steel, these extensions come with all the necessary hardware and a 1-year warranty. Designed to fit most Peterbilt 389 models from 2014 and newer, these panel extensions enhance the appearance of your truck while providing added functionality. With their durable construction and easy installation, these extensions are a reliable and long-lasting solution for improving the overall look and practicality of your Peterbilt 389.