Exodus 26:13-15

Young's Literal Translation

¹³ and the cubit on this side, and the cubit on that, in the superfluity in the length of the curtains of the tent, is spread out over the sides of the tabernacle, on this and on that, to cover it;

¹⁴ and thou hast made a covering for the tent, of rams' skins made red, and a covering of badgers' skins above.

¹⁵ `And thou hast made the boards for the tabernacle, of shittim wood, standing up;