In Deuteronomy 3:11, it talks about a huge bed for King Og, a Giant from the land of Bashan. “Behold, his bed was a bed of iron. Nine cubits was its length, and four cubits its breadth, according to the common cubit."
9 Cubits would be 13.5 Feet long, so if it were for a Giant, they would have been 12 or 13 feet tall, but a large bed could have been a show of power.