Exodus 25:10 –15
New International Version (NIV1984)
10 “Have them make a chest of acacia wood — two and a half cubits long, a cubit and a half wide, and a cubit and a half high. 11 Overlay it with pure gold, both inside and out, and make a gold molding around it. 12 Cast four gold rings for it and fasten them to its four feet, with two rings on one side and two rings on the other. 13 Then make poles of acacia wood and overlay them with gold. 14 Insert the poles into the rings on the sides of the chest to carry it. 15 The poles are to remain in the rings of this ark; they are not to be removed.
From BibleGateway.com: http://www.biblegateway.com/passage/?search=Exodus 25:10 –15&version=NIV1984