Like many small contractors, I do extremely varied work. One week I may remodel a bathroom, the next construct a deck, and the one after that build out an attic room. With so much variety, I never know what I'll need from job to job — and I despise having to drop everything and run for hardware, tools, or supplies.

I used to do the "tools in the back of the truck" routine, but it severely limited my ability to carry material. As my tool inventory increased and my back complained, I realized I needed something better. I looked at enclosed trailers, but they ran $5,000 and up for a quality unit. Even at that price, they needed to be "built out...

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