The square one you see has a fitter inside diameter of 2.5" and outside diameter of 3.125"
The other piece (tall) has a fitter inside diameter of 2.5" and outside diameter of 3.125" also.
Both are 5.75" tall
The square one in the picture is 5" wide and 4" deep
The narrow one in the picture is 4.5" wide and 4" deep.
Thank you for your question.