The Peterbilt 31 Inch Aluminum Battery Box is a practical and reliable solution for storing batteries in most Peterbilt models. Made of durable aluminum, this battery box measures 31 inches wide and includes a bottom and top step for easy access. With its sturdy construction and convenient design, this battery box offers a secure and organized storage solution for your batteries. Sold individually, it is a must-have accessory for any Peterbilt owner looking to keep their batteries safe and easily accessible.