… and their frames and thresholds for doors, shutters, balustrades, pillars and columns), of iron or steel; plates, …
Explanatory notes
… and their frames and thresholds for doors, shutters, balustrades, pillars and columns), of iron or steel; plates, … by the fact that once they are put in position, they generally remain in that position. They are usually made up from … parts of structures mentioned in the heading, the heading also includes products such as : Pit head frames and …