Knaack Job Site Storage Chest Box 38.2 Cu Ft 48" Storagemaster Model 79-KLKnaack Job Site Storage Chest Box 38. 2 Cu Ft 48" Storagemaster Model 79 KL The Model 79 STORAGEMASTER Piano Box provides a complete storage solution for tools, supplies, and other materials on the jobsite. Measuring 48in wide and 49in high, this job box offers 38. 2 cu ft of storage that fits perfectly in the back of a full size pickup truck. Full width interior shelves let you organize and protect tools, and the bi fold cover opens upwards and folds