Exodus 37:1-5

Bezalel  made the ark of acacia wood, forty-five inches long, twenty-seven inches wide, and twenty-seven inches high.  He overlaid it with pure gold inside and out and made a gold molding all around it. He cast four gold rings for it, for its four feet, two rings on one side and two rings on the other side. He made poles of acacia wood and overlaid them with gold. He inserted the poles into the rings on the sides of the ark for carrying the ark.