Knaack Job Site Storage Chest Box 47.8 Cu Ft 60" Storagemaster Model 89-KLKnaack Job Site Storage Chest Box 47. 8 Cu Ft 60" Storagemaster Model 89 KL The Model 89 STORAGEMASTER Piano Box provides a complete storage solution for tools, supplies, and other materials. Measuring 60in wide and 78in high when open (49in when closed), this job box offers 47. 8 cu ft of storage for all trades. Full width interior shelves enable you to organize and protect tools, and the bi fold cover opens upwards and folds completely out of the