A painted wall surface does not reveal all of the construction behind it. Share any known wall details and nearby services. Installation depends on suitable support and safe fixing locations, not simply finding a plug that fits an existing hole.
Heavy curtains can place different demands on the supports from lightweight fabric. Include product weight information rather than only the window width. The rod span and manufacturer bracket spacing also matter when deciding whether the intended arrangement is suitable.
Show the full opening and explain the intended mounting position. Handles, opening windows and the depth of the recess can interfere with the curtain or fittings. The final layout should be checked against the product before any drilling is agreed.
The agreed service covers non-powered rods/tracks, compatible brackets, positioning and operation checks. Exclusions: Electrical motors/wiring, unsuitable substrates, unassessed cord hazards, unsupported high access.