Exodus 26:15-25
26:15 “You are to make the frames for the tabernacle out of acacia wood as uprights.
26:16 Each frame is to be fifteen feet long, and each frame is to be two feet three inches wide,
26:17 with two projections per frame parallel one to another. You are to make all the frames of the tabernacle in this way.
26:18 So you are to make the frames for the tabernacle: twenty frames for the south side,
26:19 and 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;
26:20 and for the second side of the tabernacle, the north side, twenty frames,
26:21 and their forty silver bases, two bases under the first frame, and two bases under the next frame.
26:22 And for the back of the tabernacle on the west you will make six frames.
26:23 You are to make two frames for the corners of the tabernacle on the back.
26:24 At the two corners they must be doubled at the lower end and finished together at the top in one ring. So it will be for both.
26:25 So there are to be eight frames and their silver bases, sixteen bases, two bases under the first frame, and two bases under the next frame.