Brackets & Connectors
Brackets do the load-bearing, and they are where most pole problems start. Too few, too widely spaced, or the wrong projection, and the pole sags or the curtain will not clear the sill.
Connectors join sections into a longer run, and passing brackets let the rings travel past a centre support so the curtain crosses the whole width. Recess brackets fix into a reveal rather than the face of the wall.
All of it has to match the pole diameter and range. See curtain pole brackets explained.