Good timing. I was just getting the camera ready to take pictures. lol
I don't know that I would call it a deep groove. The 1754s definitely don't have feet on them, but there is a slight rim around the bottom. I have them in my AP racks and haven't had any problems with them.
Anyway, here are some pics of a 1754. If you look really hard on the bottom of a tub, you will see the tiny raised numbers "1754". If you don't see those, I don't think it's a 1754.
thanks paul
i bought tubs from target that were suppose to be sterilite 1754 but they are'nt ..they are actual 2" shorter than the 1754..i have told AP of the problem
thanks again paul for the pics