Rashi on Numbers 3:25/רש"י על במדבר ג׳:כ״ה

1המשכן THE DWELLING — i.e. the lower curtains (those which were spread immediately over the boards of the Tabernacle).

2והאהל AND THE TENT (the word has not its usual meaning of “tent”; cf. Rashi on Exodus 26:7—12) — i.e. the curtains of goats’ hair that were made as a roofing (to cover the lower curtains).

3מכסהו THE COVERING THEREOF — the covering made of rams’ skins and tachash skins (cf. Rashi on Exodus 35:11).

4ומסך פתח AND THE SCREEN FOR THE ENTRANCE — i.e. the Veil (cf. Rashi on Exodus 35:12).