Filter out Blue Light (380nm-490nm wavelength) and relieve computer eye strain to help you sleep better. Actual Screen Protector dimensions are 19.5 inches measured diagonally. 17 inches width x 9.6 inches high. Please compare your monitor to our measurement picture before purchasing Easy to apply and remove. Guarantee Bubble Free Installation. This package includes 2 screen protectors and an installation kit. Helps reduce glare and mirror-like reflections which makes your screen easier to use in high-glare situations. This High Quality Anti Blue Light Screen Protector removes the blue light from the screen and helps relieve computer eye strain to help you sleep better. Easy to apply and removable. Protects screen against scratches.