Ezekiel 43:13-15

13And these are the measures of the altar in cubits: the cubit is a cubit and a hand breadth. The bottom was a cubit [in height] and the breadth a cubit, and its border on the edge thereof round about, one span: and this was the base of the altar.

14And from the bottom upon the ground to the lower settle was two cubits, and the breadth one cubit; and from the small settle to the great settle, four cubits, and the breadth a cubit.

15And the upper altar was four cubits; and from the hearth of 1God and upward were four horns.