StarTech.com 27-inch 16:9 Computer Monitor Privacy Screen, Hanging Acrylic Filter, Monitor Screen Protector/Shield, +/- 30 Deg., Glossy - 27-inch 16:9 computer monitor hanging acrylic privacy filter; Quick to hang/remove - Obscures view outside +/-30 deg - Security shield w/glossy finish/scratch protection coating - Computer screen protector blocks blue light; 65% light transmittance: