I'm looking to get a nice sized, sturdy metal rack for a couple of 40 Breeder tanks in addition to some small fish tanks. The largest fish tank would be a 20 long. I do not have the resources currently to build our own, and most of the racks I've been finding on walmart, lowes, and home depot don't really have the footprint I'm looking for. It should be slightly larger than the footprint of the 40s, but it doesn't need to be ridiculously huge. Also needs adjustable shelf height.

Basically, does anyone already have a rack and remember where they got it from, or does anyone have any recommendations so I can buy one soon?