My screen to paper size conversion:
15 inches is almost exactly A4 landscape 17 inches has a 2cm gap around the edges 19 inches has a 5cm gap around the edge 24 inches is A3 landscape or 2.5xA4 in portrait mode.
15 inches is almost exactly A4 landscape 17 inches has a 2cm gap around the edges 19 inches has a 5cm gap around the edge 24 inches is A3 landscape or 2.5xA4 in portrait mode.