They look like a perfect fit but they are a little too long. Although not just right for this project but I love them. 
I measured the bottom of my mini fridge before ordering but I didn’t measure the inside depth of the door.
For now I’m using 2 of them but my search continues.
These are great! They are sturdy and easy to handle, not thin and flimsy. My main refrigerator, freezer, and pantry full of Fridge Bins and these are just as good at half the price. 
Although a bust for this project, I’m sure I will find a use for them.