Ezekiel 43:14-15 NIV

14 From the gutter on the ground up to the lower ledge it is two cubits high and a cubit wide, and from the smaller ledge up to the larger ledge it is four cubits high and a cubit wide.
15 The altar hearth1 is four cubits high, and four horns2 project upward from the hearth.

References for Ezekiel 43:15