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79 Jobsite Storage - Knaack CA
79 Jobsite Storage - Knaack CA79 Jobsite Storage - Knaack CA79 Jobsite Storage - Knaack CA
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Model 79 STORAGEMASTER® Piano Box, 38.2 cu ft


The Model 79 STORAGEMASTER® Piano Box measures 48 in wide, 49 in tall and has a capacity of 38.2 cu ft. Ideal for every trade, it is caster-ready and includes full-width shelves for organization of tools and supplies. It also features a bi-fold cover which folds completely out of the way for unrestricted access and fits perfectly in the width of a full-size truck bed.


  • Uses Accessory Door Shelf Model 479
  • WATCHMAN® IV Lock System with recessed lock housing for protection against theft
  • Additional reinforcement between the lock and the side housing
  • Bigger, better hinges offer stronger protection against pry-ins
  • Power Pass® Electrical Pass-Thru grommet provides easy, weatherproof power cord access
  • Heavy-duty hinges are extra durable and resist pry-ins
  • Powder-coat finish for superior durability and corrosion resistance
  • Four-way skids allow access from any side, making it easier and faster to transport
  • Closed height 49 in
  • Open height 78 in
  • Caster-ready 14-gauge steel skids to accommodate optional casters
  • Recessed handles
  • Gas spring guards to prevent damage from shifting loads
  • Improved ball stud bracket provides added strength reduces the potential for breakage and improves durability
  • When the cover is closed, the Model 69 chest can be used as a work table


FeatureSize / Details
StylePiano Boxes
Steel Gauge16
Approx. Cu. Ft. Per Unit38.2
Approx. Product Height49 in
Approx. Product Length48 in
Approx. Product Width30 in
Approx. Shipping Weight lb (kg)287 (130.2)
Closed Height49 in
Electrical AccessPower Pass® Electrical Pass-Thru
Lock SystemWATCHMAN® IV Lock System
Max. Open Extended Height78 in
Powder Coat FinishYes

Package Contents

Part NumberQtyDescription



Additional Piano Models

Model No.BrandApprox. Cu. Ft. Per UnitApprox. Product HeightApprox. Product LengthApprox. Shipping Weight lb (kg)Closed HeightBuy Online
1000MONSTER BOX®4854-1/2 in66 in405 (183.7)54-1/2 in
When cover is closed, chest can be used as a work table.
STORAGEMASTER®35.334-1/4 in60 in282 (127.9)37 in
79STORAGEMASTER®38.249 in48 in287 (130.2)49 in
79-DSTORAGEMASTER®; Junk Trunk™36.249 in48 in400 (181.4)49 in
79-DHSTORAGEMASTER®; Junk Trunk™;ThermoSteel™38.249 in48 in420 (190.5)49 in
79-HSTORAGEMASTER®;ThermoSteel™36.249 in48 in300 (136.1)49 in
89STORAGEMASTER®47.846 in60 in337 (152.9)49 in
89-DSTORAGEMASTER®; Junk Trunk™43.849 in60 in510 (231.3)49 in
89-DHSTORAGEMASTER®; Junk Trunk™;ThermoSteel™47.849 in60 in530 (240.4)49 in
89-HSTORAGEMASTER®;ThermoSteel™43.849 in60 in350 (158.8)49 in
90STORAGEMASTER®57.549 in72 in380 (172.4)49 in
91STORAGEMASTER®57.549 in72 in409 (185.6)49 in