Exodus 27:1-2

Amplified Bible

The Bronze Altar

27 “And you shall make the altar [for burnt offerings] of acacia wood, five cubits long and five cubits wide; the altar shall be square, and its height shall be three cubits. ² Make horns (horn-shaped projections) for it on its four corners; the horns shall be of one piece with it, and you shall overlay it with bronze.