The Tabernacle

The structure of the tabernacle was fifteen  feet wide, forty-five  feet long and fifteen feet high. Over an inner lining of embroidered  linen. This is described in the first verse to the sixth verse in chapter twenty-six chapter in the book of Exodus.
The tabernacle was to have a covering woven of goat hair in  the seventh verse to the thirteenth verse and two additional covering of leather, one made from ram skins dyed red and one from the hides of sea cows in the fourteenth verse in Exodus Chapter Twenty-six.
Internally, the ceiling was flat but the leather coverings had a ridge line with slopping sides is not known.  Symbolically the tabernacle represented God's royal tent.
The tabernacle had twisted linen and blue, purple and scarlet yarn. The cherubim signifying a royal chamber.

Exodus 26:1-14

 “Make the tabernacle with ten curtains of finely twisted linen and blue, purple and scarlet yarn, with cherubim woven into them by a skilled worker. ² All the curtains are to be the same size—twenty-eight cubits long and four cubits wide. ³ Join five of the curtains together, and do the same with the other five. ⁴ Make loops of blue material along the edge of the end curtain in one set, and do the same with the end curtain in the other set. ⁵ Make fifty loops on one curtain and fifty loops on the end curtain of the other set, with the loops opposite each other. ⁶ Then make fifty gold clasps and use them to fasten the curtains together so that the tabernacle is a unit.

⁷ “Make curtains of goat hair for the tent over the tabernacle—eleven altogether. ⁸ All eleven curtains are to be the same size—thirty cubits long and four cubits wide. ⁹ Join five of the curtains together into one set and the other six into another set. Fold the sixth curtain double at the front of the tent. ¹⁰ Make fifty loops along the edge of the end curtain in one set and also along the edge of the end curtain in the other set. ¹¹ Then make fifty bronze clasps and put them in the loops to fasten the tent together as a unit. ¹² As for the additional length of the tent curtains, the half curtain that is left over is to hang down at the rear of the tabernacle. ¹³ The tent curtains will be a cubit longer on both sides; what is left will hang over the sides of the tabernacle so as to cover it. ¹⁴ Make for the tent a covering of ram skins dyed red, and over that a covering of the other durable leather.