I found the idea for this type of rack on another forum and decided to give it a try. It is super easy to build and only takes an hour or so at most. All you need are pieces of melamine shelving, nuts and washers, a drill bit, and all thread. My shelves are 48" long 16" wide and 5/8" thick. I used 3' pieces of 5/8" all thread. All you have to do is drill holes in the ends of the shelves and place a nut and washer above and below each shelf. They can be adjusted to fit any size tub and you can get a good tight fit. I still have room to add another shelf on mine, which I'll be doing soon. I can fit 5 6qt, 3 15qt, or 1 15qt and 1 28qt sterilite tubs per shelf. It is super sturdy, no wobble and no shelf drooping. I decided to use ultratherm heaters on this one. I'm not experienced with flexwatt, but I may give it a go on my next one.
