Ezekiel 43:12-14 New Revised Standard Version (NRSV)
12 This is the law of the temple: the whole territory on the top of the mountain all around shall be most holy. This is the law of the temple.
13 These are the dimensions of the altar by cubits (the cubit being one cubit and a handbreadth): its base shall be one cubit high,[a] and one cubit wide, with a rim of one span around its edge. This shall be the height of the altar: 14 From the base on the ground to the lower ledge, two cubits, with a width of one cubit; and from the smaller ledge to the larger ledge, four cubits, with a width of one cubit;