Filter out Blue Light and relieve computer eye strain to help you sleep better. Actual Screen Filter dimensions are 17 inch measured diagonally. 13.31 inch width x 10.61 inch high. Compare your screen dimensions against our dimension before purchasing. Block Blue light at wavelength at 380nm-490nm. Easy to apply and remove. This package includes 3 screen protectors and an installation kit. Protects screen against scratches and Anti Glare function. Filter out Blue Light and relieve computer eye strain to help you sleep better. Actual Screen Filter dimensions are 17 inch measured diagonally. 13.31 inch width x 10.61 inch high. Compare your screen dimensions against our dimension before purchasing. Block Blue light at wavelength at 380nm-490nm. Easy to apply and remove. This package includes 3 screen protectors and an installation kit. Protects screen against scratches and Anti Glare function.