I horse traded, bought and sold used boxes until I traded in on a custom built Matco double bank with 2 full length side lockers. Brick shythouse with the exception of a drawer slide in a locker which are lighter duty. I was between Mac/Matco but Mac didn't have anything with 30" deep drawers at the time. I think the slides on the main cabinet are rated at 250lbs, and I frequently pull the drawers and stand on them to reach the stuff and tools that won't fit. It seems the top has turned into a 9' long 30" deep shelf that tends to accumulate crap that I'm constantly digging through. LOL I've been looking at the HF's maybe and re-organise and move some of my more engine/mechanican related tools out of the bodyshop box. I think they're built a little better then other boxes at the price point.