Charles Ellicott Commentary Numbers 4:26

"and the hangings of the court, and the screen for the door of the gate of the court, which is by the tabernacle and by the altar round about, and their cords, and all the instruments of their service, and whatsoever shall be done with them: therein shall they serve." — Numbers 4:26 (ASV)

Which is by the tabernacle and by the altar round about. —Or, which are ... The curtains or hangings enclosed the whole of the court.