Reduce glare & harmful blue light, & improve clarity with Kensington&153;s Anti-Glare & Blue Light Reduction Filter for 21.5 Monitors. This filter reduces harmful blue light by up to 43%, & features an antimicrobial coating (matte side only) that inhibits bacteria growth by up to 99% (tested to JIS Z 2801: 2010E for Escherichia coli & Staphylococcus aureus). An innovative anti-glare coating (matte side only) reduces reflection & improves clarity. Seamless attachment makes installation & removal easy & mess-free.\n\n Innovative anti-glare coating reduces reflection & improves clarity (matte side only). This filter eliminates harmful blue light by up to 43%, easing eye strain & reducing the chances of interrupting sleep patterns.\n Antimicrobial coating (matte side only) inhibits bacteria growth by up to 99% (tested to JIS Z 2801: 2010E for Escherichia coli & Staphylococcus aureus).\n Seamless attachment makes installation & removal easy & mess-free.\n Touch & pen enabled, so you can use your device just as you would without a filter.\n Included cleaning cloth helps keep your screen dust, lint, & smudge-free.\n Two-year warranty means you can rest assured knowing you&153;re covered by Kensington.\n\n\n\n\n\n\n\n Model: Anti-Glare & Blue Light Reduction Filter for 21.5" Monitors\n\n\n\n\n\n\n\n