Rashi on Exodus 27:9/רש"י על שמות כ״ז:ט׳

1קלעים HANGINGS — made like the sails of ships, full of holes, of plaited work and not weaver’s work. The rendering in the Targum, סרדין, is the same as the rendering of מִכְבָּר, which it renders by the singular סרדא; this is because they, both the hangings and the grate, are riddled with holes like a sieve.

2לפאה האחת FOR ONE SIDE — the entire side (not only the corner; cf. Rashi on Exodus 26:18) is called פאה.‎