Rashi on Numbers 4:26/רש"י על במדבר ד׳:כ״ו

1אשר על המשכן [AND THE HANGINGS OF THE ENCLOSURE, AND THE SCREEN FOR THE ENTRANCE OF THE GATE OF THE ENCLOSURE] WHICH ARE על המשכן — that is to say, the hangings and the screen of the court which together screen and shelter the Tabernacle and the copper altar on all sides.

2ואת כל אשר יעשה להם — Understand this as the Targum does; “and everything that is handed over to them” — i.e. to the sons of Gershon.