FILTER DIMENSIONS - WIDTH : 18 3/4 inch (476mm) , HEIGHT : 10 5/9 inch (268mm) Do you have any experience that someone tries to peep at your cell phone or laptop in the public places such as subway or office? YES2B Privacy Filters could protect your privacy. They are compatible with notebooks, laptops, desktops and computer monitors. YES2B's premium privacy filter turns screens black when viewed from the side 30 degree from each left/right, while maintaining clear view from the front. The micro-louver is the core technology of YES2B Privacy Filter. Protect your privacy YES2B Privacy Filter limits 60° of viewing angle from the front so that any person besides you can not see your screen. This premium privacy filter prevents the screen from other views in the public places such as subway, office, library and bank. Anti-Glare & Anti-Blue Light Blue Light is the blue colored light existing in 380~500nm wavelength emitted from all the LED screens such as computer monitor, laptop, cell phone and TV. It is not absorbed into crystalline lens of eyes but reaches retina making it weak and is one of the main cause of aging eyeball and blear eyes. YES2B Privacy Filter protects your eyes from this harmful blue light, and prevents eye strain. Also, YES2B Privacy Filter block glare from the screen and reduces eye fatigue. Features Anti-Spy Anti-Glare Blue Light Cut Protects screen from scratch & fingerprint Easy Installation (2 Options) Slim Thickness (Easy to carry) Reversible (Matte & Glossy) Package Contects 1pc of YES2B Privacy Filter 2sets of Double Sided Tape 2sets of Slide-On/Off Hang-Tab 1pc of Cleaning Cloth Manual Material Origin : South Korea