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Knaack STORAGEMASTER® Piano Box (38.2 cu ft.)

SKU: UPC783965001861 Categories: , Tag:


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 completely out of the way for unrestricted access to the interior. A tan, powder-coat finish provides durable protection against corrosion, while a heavy-duty piano hinge protects against pry-ins and theft. A Watchman® IV Lock System aids further in this protection, featuring a recessed 7-gauge lock housing. Handles are also recessed to avoid damage during transit. Run power to the interior of the gang box with a grommeted, weatherproof Power Pass® Electrical Pass-Thru. Spring guards prevent damage from shifting loads during transport. You can access this jobsite storage box from any side, thanks to 7-gauge, 4-way skids.


  • The JunkTrunk™ Quick-Access Drawer is a heavy-duty independent locking drawer for quick access to high-demand tools and accessories within the job box
  • The locking mechanisms of the main chest and JunkTrunk™ drawer allow them to be keyed alike or independently
  • The raised floor reduces physical strain by allowing easy access to your tools at the bottom of the jobsite box
  • The piano box features the patented WATCHMAN® IV Lock System with 3-point latch and 7-gauge reinforced lock housing for best-in-class theft prevention
  • Heavy-duty 16-gauge steel construction with fully arc-welded seams
  • Spring guards prevent shifting loads in the piano box from damaging the gas springs
  • Piano box lids are supported by dual gas-springs which assist in the operation of the lid
  • 4-way skids with 7-gauge construction allow access to the tool storage box from any side, making it easier, faster, and safer to transport
  • Pre-punched skids allow easy installation of casters (available as optional accessories)
  • Heavy-duty recessed side handles allow for enhanced mobility of jobsite box and protection against damage in transport
  • Heavy-duty piano hinge offers best-in-class protection against break-ins
  • Steel storage box features powder-coat finish for superior durability and corrosion resistance
  • Power Pass® Electrical Pass-Thru grommet provides easy, weatherproof power cord access to piano box



Style Piano Boxes
Material Steel
Color Tan
Number of Handles 2
Number of Skids 4
Warranty 3-Year
Electrical Access Type Power Pass® Electrical Pass-Thru
Steel Gauge 16-ga body, 7-ga skids
Lock System WATCHMAN® IV Lock System
Powder Coat Finish Yes
Soft Close Lid No
UPC 783965001861


Approx. Product Width (in) 48
Approx. Product Height (in) 49
Approx. Product Depth (in) 30
Approx. Product Weight (lb) 287
Approx. Shipping Length (in) 48
Approx. Shipping Width (in) 30
Approx. Shipping Height (in) 49
Approx. Shipping Weight (lb) 287
Approx. Closed Length (in) 49in
Max. Open Extended Height 78in
Nation Wide Ladder

Nation Wide Ladder