Ezekiel 43:14-17
43:14 From the base of the ground to the lower edge is 3½ feet, and the width 1¾ feet; and from the smaller ledge to the larger edge, 7 feet, and the width 1¾ feet;
43:15 and the altar hearth, 7 feet, and from the altar hearth four horns projecting upward.
43:16 Now the altar hearth is a perfect square, 21 feet long and 21 feet wide.
43:17 The ledge is 24½ feet long and 24½ feet wide on four sides; the border around it is 10½ inches, and its surrounding base 1¾ feet. Its steps face east.”