Ezekiel 43:13-14

And these are the measures of the altar in cubits: (the cubit being a cubit and a hand's measure;) its hollow base is a cubit high and a cubit wide, and it has an overhanging edge as wide as a hand-stretch all round it: And from the base on the earth level to the lower shelf, the altar is two cubits high and a cubit wide; and from the smaller shelf to the greater shelf it is four cubits high and a cubit wide.