Exodus 26:22-25

22For the back part of the Tabernacle, westward, you are to make six boards.

23Make two boards for the corners of the Tabernacle on the back side.

24They are also to be doubled at the bottom, and in the same way joined at the top by the first ring. It is to be this way for them both, and they will provide for the two corners.

25So there will be eight boards, with 16 silver bases, two bases under each board.