I bought Sterilite 41 qt tubs from Walmart last week. Do your own measurements on them. I did and found out that the height and length are about a half inch shorter than listed on the label. I also made a point to measure the dimensions of the top and the bottom of the tub. I decided to build my rack shelves an extra half inch wide so it will also hold CB-70 tubs in the future if I decide to upgrade.