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GENERALLY 15-20CM, DEPENDING ON HOW MANY LAYERS OF CURTAINS YOU INSTALL.
Generally, it is better to reserve space in 20-25 cm for curtain boxes, in order to install double curtains or change electric curtains in the future, otherwise it will be more troublesome in the later stage.
When decorating the ceiling, a curtain box will be reserved in the ceiling. Depending on how the top is handled, curtain boxes come in two forms. One is that the room has a suspended ceiling, and the curtain box should be hidden in the ceiling, and it will be completed together when the top ceiling is made, and the other is that the room is not suspended, and the curtain box is fixed on the wall and the window frame is set as a whole. >>>More
At least 15 cm for single tracks, at least 20 for double tracks, preferably 25Whether it's aligned or not, see if you want a curtain head, and a rack.
It's okay to make up one, as shown below.
Please remember to adopt it in time, thank you. >>>More
1. Look at the curtains to make several times the folds, see whether the single track is double track, the minimum is 8 cm, and the maximum is 15 cm.