Vail: A Covering for the Ark of the Covenant
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Exodus 35:12
the ark with its poles and mercy seat, and the veil to shield it;
Exodus 39:34
the covering of ram skins dyed red, the covering of fine leather, and the veil of the covering;
Exodus 40:21
Then he brought the ark into the tabernacle, put up the veil for the screen, and shielded off the ark of the Testimony, just as the LORD had commanded him.
Numbers 4:5
Whenever the camp sets out, Aaron and his sons are to go in, take down the veil of the curtain, and cover the ark of the Testimony with it.