Keluaran 36:33

36:33 He made the middle bar to reach from end to end in the center of the frames.

Keluaran 37:5

37:5 and put the poles into the rings on the sides of the ark in order to carry the ark.

Keluaran 40:18

40:18 When Moses set up the tabernacle and put its bases in place, he set up its frames, attached its bars, and set up its posts.