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.