Blue Light Screen Protector Panel For 26'/27'/28' Diagonal LED PC Monitor (W 24.80' X H 15.55') (W630mm x 395mm). Blue Light Blocking up to 100% of Hazardous HEV Blue Light from LED screens. Reduces Digital Eye Strain to benefit eye health. For office or home PC's to promote Healthy Eyes for Working People. For 26'-28' diagonal screen.