1Ideal Compatibility: Designed to fit 21.5inch widescreen monitors with a 16:9 aspect ratio, measured diagonally. Product dimensions are 475mm x 267mm. This versatile blue light protector is ideally compatible with for HP, for Dell, for Acer, for Asus, for Viewsonic, and other monitor brands. 2Reduces Eye Fatigue: Minimize the strain on your eyes and associated discomfort by reducing exposure to UV and blue light. Our blue light screen protector filters up to 61% of blue light and up to 99% UV rays, providing maximum reduction in eye fatigue and enhancing your digital well being. 3Superior Blue Light Blocking: With its five layer design, our blue light filter attenuates the impact of blue light wavelengths from 420460nm. The optically transparent adhesive layer and a minimum of 85% transmittance ensure image clarity without pixelation, making it a perfect companion for your digital devices. 4Screen Protection: Extend the lifespan of your monitor by safeguarding your screen from scratches and dirt. Acting as the outer layer for your monitor, our computer screen protector keeps it non dust. It comes with a soft, ultra fine microfiber cleaning cloth for added convenience. 5Easy Installation: Our detachable blue light screen protector is designed for precise installation without the need for messy tapes or complex setup procedures. You can easily remove or reattach our blue light blocking screen protector whenever needed, ensuring flexibility and ease of use.