Racks from LP Racks, Denmark. As you can see I started off with half racks (half racks = 5 tubs high). The smaller rack is V18, the middle one is V35 and the larger one is V70. Works great ! If you wonder why the middle tub on the V35 and V70 rack is missing it is because the sensor to my thermostats are located on those heating mats and makes it difficult to slide the tubs all the way through. Anyone have a solution to that problem? Sorry for my messy room