The Kenworth W900B 45 Inch Double Step Battery Box Assembly is a practical and reliable solution for Kenworth W900B models. With its 45-inch width and double step design, this battery box assembly offers convenience and ease of access. It is available with two steps and fits most Kenworth W900B models. This product is sold individually and provides a secure and efficient storage solution for batteries. Upgrade your Kenworth W900B with this battery box assembly for enhanced practicality and functionality.