Knaack 79-H StorageMaster Piano Box with ThermoSteel

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Knaack 79-H job box with ThermoSteel
PTR Review
  • Build Quality 10.0
  • Features & Options 9.0
  • Ease of Use 10.0
  • Security 10.0
  • Value 8.0

The ThermoSteel feature of the Knaack 79-H StorageMaster is almost certain to be a hit for the northern crowd during the winter months.

Overall Score 9.4 (out of 10)

If youโ€™ve been in the construction industry for any amount of time, youโ€™ve either had tools stolen from you, or youโ€™ve known someone whoโ€™s had that happen to them. Itโ€™s a terrible thing, but it happensโ€”and sometimes offsite storage of tools simply isnโ€™t possible or practical. For that, your options are to use a trailer (which itself can be stolen), or secure an on-site job box with your tools and accessories stored within. The advantage of a job box is that itโ€™s made out of very thick gauge steel and can be secured to the job site in a number of ways.ย The Knaackย 79-H StorageMasterย Piano Box is one of the companyโ€™s larger steel job site storage boxes, and we got an opportunity to check it out along with its newest optional feature: ThermoSteel.

Theย Knaack 79-H StorageMaster Piano Boxย isย 48 inches wideย and slightly taller than that in height (with the lid closed). Itโ€™sย internal volumeย isย 36.2 cubic feet, and itโ€™s the perfect solution for anyone wanting to store tools and important items on-site.ย Like most of the Knaack job boxes, you can order optionalย casters, and the form factors include options for shelves and/or front drawers depending upon your particular needs.

Knaack ThermoSteel Job Boxes

The big deal with this Knack job box is that it comes with their new ThermoSteel technology. This is aย heat radiatingย โ€œelectric blanketโ€ of sorts which keeps everything at the optimal temperature. That helps your lithium-ion batteries stay ready for use and also helps maintain the condition of your power tools, accessories, and adhesives so that they donโ€™t freeze on the job site. The idea is that you would plug in the ThermoSteel heating system once the temperature drops to 40 degrees or below. This not only protects your equipment, it keeps adhesives and other materials in a โ€œready-to-useโ€ state. While itโ€™s never really snowingย here in Central Florida, we do have our share of cold days where the temperature hits near freezingโ€”making this a handy solution (albeit one that our northern Pros will appreciate on a much more regular basis!)

Knaack 79-H ThermoSteel
Under this radiant sheet steel is the ThermoSteel system, an electric thermal blanket that radiates heat to the entire box, keeping your tools and adhesives at a safe and proper temperature, so theyโ€™re ready to go when you are.

The Knaack 79-H StorageMaster piano box is a rugged, but simpleย design with aย bi-fold lid that allows it to raise completely and fold flat out of the way. That means you donโ€™t have to worry about clearance for either your head or your tools when you store and remove things from the StorageMaster job box.

Knaack 79-H front

Unboxing theย Knaack 79-H StorageMaster Piano Box

Since theย Knaack 79-H StorageMaster Piano Box is just 48-inches wide, we were able to get it loaded onto the bed of a 2015 Ford F-150 and take it to the Pro Tool Reviewsย Shop whee we unloaded it and prepped it for photography and use as a catch-all for our larger equipment. The Knaack 79-H came on a pallet with plenty of corner protection and thick corrugated cardboard wrapped around it to keep it safe.

Knaack 79-H shipping

The steelย casters for the Knaack 79-H came in a separate box and installed easily enough. There are two fixed wheels and two locking swivel wheels. We liked the presence of grease points on the wheels to keep them running smoothly.

Knaack 79-H Piano Box casters
The grease points on the casters will ensure many years of smooth operation

Knaack 79-H StorageMaster Piano Box Specs & Features

  • ThermoSteel heated storage
  • Watchmanย IV Lock System with recessed lock housing
  • Optional wheel casters
  • Four-way skid access from any side
  • Recessed side handles
  • Piano box lid supported with dual gas struts
  • Heavy-duty hinges
  • Powder-coat finish
  • Improved ball stud bracket
  • Height (closed/open):ย 49 in./78 in.
  • Width: 48 in.

Using the Knaack 79-H Piano Box

The Knaack 79-H has the same thick gaugeย steel youโ€™ve come to expect from a good quality job box, and theย dual gas struts provide a nice assist whenย opening the box lid.

Knaack 79-H lifters
Knaack 79-H latch external

The Watchman IV latch system isย designed to be used with a Master Lock No. 1, No. 5, or American Lock No. 50.ย You can useย an equivalent sizedย lock, but pay attention to the installation guide for the required dimensions. The Watchman IV design is such that a properly-sized lock prevents the Knaack 79-H latch from physically being able to slide into the open positionโ€”thus securing the lid from opening. If youโ€™re like me, wheeling the entire job box away isnโ€™t going to be practical either (plus, you can chain it in place or keep it indoors, further securing your tools). While not foolproofโ€”no solution isโ€”itโ€™s a great system that makes it hard to get into unless you actually pick theย lock itself (you canโ€™t access the steel of the lock to use bolt cutters or a saw).

Knaack 79-H piano box latch
Inside the Watchman IV lock system.

We stored all of our larger tools in the Knaack 79-H StorageMaster piano box along with some items that donโ€™t do well in freezing weather. We loved the design of this boxโ€”thereโ€™s a ton of storage, and the shelving and ventedย steel door is a great design. Thereโ€™s also plenty of access to run power and splitters between the top and bottom sections, so you can keep battery chargers in the box as well to recharge your tool batteries on-site overnight. If you want a bottom drawer (or โ€œjunk trunkโ€ as they call it), opt for the slightly heavier 79-D or 79-DH model.

Knaack 79-H job box storage
You can store an ample amount of tools in the Knaack 79-H job box, and thereโ€™s no doubt theyโ€™ll be there when you get back.

Even for corded tools or battery powered products with modern lithium-ion batteries, keeping yourย valuable tools secure and warm when stored will increase their usefulness and life expectancy. Going from freezing to 100-plus degrees within a span of seconds isnโ€™t really good for anyย toolโ€ฆand if youโ€™re trying to use frozen adhesives, well, forgeddaboudit. With the Knaack 79-H and other job boxes they sell with theirย ThermoSteel option, you wonโ€™t have to worry about this any longer. You can pick up the Knaack 79-H for just overย $1,400 at Acme Toolsโ€ฆthatโ€™s a lot cheaper than having to replace all of your tools because youย didnโ€™t properly secure them.

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