PROTECT SENSITIVE VISUAL DATA: Privacy screen uses Microlouver technology to black-out the display when viewed from the sides (+/- 30 degrees from the center); Keep data private and prevent visual eavesdropping ENSURING THE RIGHT FIT: Designed to fit computer widescreen monitors with 19" screens and 5:4 aspect ratio; Dimensions of 14.8x11.8 in (377x302 mm); Measurement guide available for detailed measurement steps and alternative sizes REDUCE EYE STRAIN: This computer monitor privacy screen blocks up to 51% of blue light, which helps to reduce digital eye strain and improves visual comfort during prolonged use; Light transmittance of 60% for better screen readability REVERSIBLE FILTER: Privacy shield features an anti-glare matte side for environments prone to glare and a high-gloss side that helps retain color vibrancy; Matte side features an additional coating to protect against scratches and fingerprints HASSLE-FREE APPLICATION: Install the privacy screen protector using the included adhesive strip for bezel-less/slim bezel displays, or use the mounting tabs on monitors with raised bezels to have the ability to switch between the glossy or matte sides