The covering - This is not the same as the covering of Exodus 35:11, which denotes the covering of the tent (see Exodus 26:14): the word is used here for the entrance curtains (see Exodus 26:36; Exodus 27:16).
Related Commentaries of Exodus 35:12
Exodus 35:12
12 The ark, and the staves thereof, with the mercy seat, and the vail of the covering,