Charles Ellicott Commentary Exodus 26:36-37

"And thou shalt make a screen for the door of the Tent, of blue, and purple, and scarlet, and fine twined linen, the work of the embroiderer. And thou shalt make for the screen five pillars of acacia, and overlay them with gold: their hooks shall be of gold: and thou shalt cast five sockets of brass for them." — Exodus 26:36-37 (ASV)

7. THE HANGING FOR THE DOOR.

It is essential in the East to shut out light and heat, for which reason tents have always had doors. These are usually made of a piece of cloth, which is raised for a man to enter, and falls behind him. But for a tent of the size described, which seems to have been above twenty-two feet high in the centre, something more was required. The “hanging” spoken of appears to have been a beautifully embroidered curtain, which could be either drawn up or let down, and which was attached by golden “hooks” to five pillars plated with gold, thus dividing the entrance into four equal spaces.