Exodus 26:13-17

The cubit on one side and the cubit on the other, of what is left over in the length of the curtains of the tent, shall hang over the sides of the tabernacle on one side and on the other, to cover it.

And you shall make a covering for the tent of rams’ skins dyed red and a covering of fine leather above. Boards and Bases

“Then you shall make the boards for the tabernacle of acacia wood, standing upright.

Ten cubits shall be the length of each board and one and a half cubits the width of each board.

There shall be two tenons for each board, fitted to one another; that is what you shall do for all the boards of the tabernacle.