Peterbilt Battery Box Heavy Duty Step Kit. Fits Peterbilt -379 388 389. SURFACE: As The Picture (Picture is the real object you get). Fits Peterbilt 379 Battery Boxes. Peterbilt 379 Aluminum Batt Box Bottom Replacement Step. Aluminum Diamond Plate Step. Strong, tough and well built. Size:748mm(L)X367mm(W)X2mm(T). Items unpaid within this time. Please do not order if you are not planning to pay. Within the 48 States. Standard Order Processing time. We are not responsible for carrier transit time. This information is provided by the carrier and excludes weekends and holidays. Please repack the item carefully.