There are 4 different sizes of tinted monitor overlays which can be cut to fit smaller sizes. They come in 11 different colours.
19″ (300 x 374 x 1 mm)
17″ (269 x 337 x 1 mm)
21.5″ (268 x 476 x 1 mm) widescreen
24″ (299 x 529 x 1 mm) widescreen
How do I measure LCD screen size?
The right way to measure a screen size is diagonally from corner to corner. You could measure from the top left corner to the bottom right, or the top right corner to the bottom left, this is suitable for the 17″ & 19″ monitor overlays, as shown by the image.
The image for the widescreen overlays is used as a guide to show how either 21.5″ or 24″ monitor overlays are measured.
Monitor overlay software programs are also available.