Ezekiel 43:14; Ezekiel 43:15

14 From the gutter on the ground up to the lower ledge that goes around the altar it is two cubits high, and the ledge is a cubit wide. From this lower ledge to the upper ledge that goes around the altar it is four cubits high, and that ledge is also a cubit wide.

15 Above that, the altar hearth is four cubits high, and four horns project upward from the hearth.