Mother..... Amazon comment:
Inside dimensions on my unit measured from rib to rib (W, D, H) in inches are: 46.5, 23.5, and 37.25 from lowest (in front). I have put one shelf in my unit using the directions supplied. This unit is in an out-of-the-way spot in my yard and is EXACTLY what I hoped it would be. If you construct a proper base or pad to put it on, like I did, it can hold quite an amount of weight comfortably.