The Kenworth W900 2005 and Older Mirror Finish Stainless Steel Battery Box Lid with Step is a practical and durable accessory for your truck. Made of 12 gauge mirror finish stainless steel, it not only adds a sleek look to your vehicle but also provides a convenient step for easy access. Available in 40 or 45 inches wide, this battery box lid fits most Kenworth W900 non DPF models from 2005 and older. With its high-quality construction and functional features, this battery box lid is a reliable choice for truck owners.