Exodus 26:19

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;

Exodus 26:29

26:29 You are to overlay the frames with gold and make their rings of gold to provide places for the bars, and you are to overlay the bars with gold.

Exodus 36:24

36:24 He made forty silver bases 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,