Bezalel constructed the altar of burnt offering from acacia wood. It was square, five cubits long, five cubits wide, and three cubits high.
Jewish Publication Society of America Version (JPS1917) - Exodus 38:1 >And he made the altar of burnt-offering of acacia-wood: five cubits was the length thereof, and five cubits the breadth thereof, four-square, and three cubits the height thereof.