Filter out Blue Light and relieve computer eye strain to help you sleep better Actual Screen Protector dimensions are 19 inches measured diagonally, with Aspect Ratio 5:4. The screen protector is 14.8 inches width x 11.8 inches height. Please compare your monitor to our measurement picture before purchasing blue light blockage (380nm-490nm) Easy to apply and remove. This package includes 3 screen protectors and an installation kit. Protects screen against scratches