I have the Gladiator Premier (welded) 30" X 30" X 12" cabinets. I bought most of them at Sears a few years ago. I hung them using Tapcons and a ledger 1" X 2" beneath them. The Tapcons I used flat washers in the 4 inside corners, you could hang off them, they aren't budging. I also got a Craftsman 8' steel workbench, I ripped a piece of 3/4" 4' x 8' plywood, then glued & screwed it together to make a 1-1/2" X 24" top, and I covered it with 3/16" steel sheet. Under that I put three Craftsman roller 26" W cabinets, two are drawers, one is side-hinged doors. This is all in a 2-car garage. Next to the workbench is another Craftsman 26" steel roller w/side-hinged doors, and a Husky 9 drawer toolchest 26" X 18" I got a deal on from one of the alert posts on-here about it, a great deal. On the other side of the garage side door is a Kobalt 30" W X 24" D X 70" H steel shelved cabinet. I picked it up from Habitat for Humanity for cheap, it appears to have very little use.
I have a bit of a mix, the Gladiator cabinets are great, a good value, strong, and durable. The Sears workbench and the 26" roller cabinets were all new, The Husky 9-drawer new, the only one used was the Kobalt 30" X 70" H and you wouldn't know it.
Keep your eye open for the pieces as they will go on-sale.
I also have the Gladiator wire shelf surface/steel frame shelving, 2,000 lbs a shelf rated, 8' W X ~6' L. I have those down nearly one entire side of the garage. They are great, strong and useful. I have hundreds of pounds on many of the shelves, heavier loads on the bottom shelves, and I spaced the first shelf off the floor so I could store heavy, bulky things underneath, like a cherry-picker disassembled, and other heavy items.
I narrowed the Gladiator shelving depth to fit my garage OH door wall returns, I was gonna weld them after cutting, and after pondering the job, I decided to use PT lumber and square-dimension aluminum tubing, to hold the shelves together. They're still fully-adjustable for spacing from one-another.






The french cleat type boards for the Gladiator Premier wall cabinets, I used to hang tools on the wall above the 8' workbench. The chargers are on the wall there, freeing up countertop surface space.
