Exodus 36:9

7For the stuff they had was sufficient for all the work to make it, and too much.

8And every wise hearted man among them that wrought the work of the tabernacle made ten curtains of fine twined linen, and blue, and purple, and scarlet: with cherubims of cunning work made he them.

9The length of one curtain was twenty and eight cubits, and the breadth of one curtain four cubits: the curtains were all of one size.

10And he coupled the five curtains one unto another: and the other five curtains he coupled one unto another.

11And he made loops of blue on the edge of one curtain from the selvedge in the coupling: likewise he made in the uttermost side of another curtain, in the coupling of the second.