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Model 89-H STORAGEMASTER® Piano Box with ThermoSteel™


The Model 89-H STORAGEMASTER® Piano Box with ThermoSteel™ measures 48 in wide, 49 in tall and has a capacity of 36.2 cu ft. Ideal for every trade, it is caster-ready and includes full-width shelves for organization of tools and supplies. Featuring heated storage to keep everything at the optimal temperature. 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.


  • ThermoSteel™ heated storage saves money, reduces downtime, and prevents ruined material due to cold temperatures.
  • Heated storage keeps everything at the optimal temperature, just plug in the heating element when jobsite temperature is less than 40˚F
  • WATCHMAN® IV Lock System with recessed lock housing for protection against theft
  • Mobilize the KNAACK® box easily with optional wheel casters, 4-way skid access, and recessed side handles
  • Piano box lids are supported with dual gas struts to assist in opening the box lid
  • 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
  • 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, chest can be used as a work table
  • The workhorses on any jobsite, STORAGEMASTER® is ideal for every trade — mechanical, plumbing, HVAC, electrical, rough and finish carpentry
  • Closed height 49 in
  • Open height 78 in


FeatureSize / Details
StylePiano Boxes
Approx. Product Height49 in
Approx. Product Width30 in
Approx. Product Length60 in
Approx. Shipping Weight Lbs.350
Approx. Cu. Ft. Per Unit43.8
Closed Height49 in
Max. Open Extended Height78 in
Electrical AccessPower Pass® Electrical Pass-Thru
Lock SystemWATCHMAN® IV Lock System
Powder Coat FinishYes

Package Contents

Part NumberQtyDescription



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