I didn't get this type because it looked too industrial in an apartment so I went went with the stainless steel look, the type that people use in the kitchen a lot or in department stores.
I bought a 30"x12"x48"...it comes with 4 shelves but I only used three of them. It's rated 800 pounds total, 200 pds each shelf. I only have a 10 on each level, and the top has various sizes, like a breeder box, a 2.5 gallon and a 5 gallon.....and Ive to say, I'm a little worried. I can grab one side and it will sway. And with I have on it doesn't even come close to the 800 pounds total.