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Knaack STORAGEMASTER® Piano Box (47.8 cu ft.)

SKU: UPC783965002929 Categories: , Tag:


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 way for unrestricted access. 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 theft protection, featuring recessed, 7-gauge lock housing. Handles are also recessed to avoid damage during transit. Run power to the interior of the box with a grommeted, weatherproof Power Pass Electrical Pass-Thru. Gas spring guards prevent damage from shifting loads during transport. This workhorse features an improved ball stud bracket for added strength and greater durability.


  • 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 during transport
  • Power Pass® Electrical Pass-Thru grommet provides easy, weatherproof power cord access to piano box
  • Heavy-duty hinges are extra durable and resist pry-ins
  • Steel storage box features powder-coat finish for superior durability and corrosion resistance
  • 4-way skids allow access to tool storage box from any side, making it easier and faster to transport
  • Closed height 49 in
  • Open height 78 in
  • Recessed handles for positive gripping even with gloves on
  • Gas spring guards prevent shifting loads in piano box from damaging gas springs
  • Improved ball stud bracket adds strength and reduces the potential for breakage
  • Ideal for every trade — mechanical, plumbing, HVAC, electrical, rough and finish carpentry
  • Gang box features patented WATCHMAN® IV Lock System with 3-point latch and 7-gauge reinforced lock housing for best-in-class theft prevention



Style Piano Boxes
Material Steel
Color Tan
Number of Handles 2
Number of Skids 6
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 783965002929


Approx. Product Length (in) 60
Approx. Product Width (in) 60
Approx. Product Height (in) 49
Approx. Product Depth (in) 30
Approx. Product Weight (lb) 337
Approx. Shipping Length (in) 60
Approx. Shipping Width (in) 30
Approx. Shipping Height (in) 49
Approx. Shipping Weight (lb) 340
Approx. Closed Length (in) 49in
Max. Open Extended Height 78in
Nation Wide Ladder

Nation Wide Ladder