Exodus 26:16-21

16Each frame is to be fifteen feet long, and each frame is to be two feet three inches wide,

17with two projections per frame parallel one to another. You are to make all the frames of the tabernacle in this way.

18So you are to make the frames for the tabernacle: twenty frames for the south side,

19and you are to make forty silver bases to go under the twenty frames – two bases under the first frame for its two projections, and likewise two bases under the next frame for its two projections;

20and for the second side of the tabernacle, the north side, twenty frames,

21and their forty silver bases, two bases under the first frame, and two bases under the next frame.