This Privacy Screen Panel is designed to fit 24 Inch computer Monitor, Screen Filter size is 21.5" Width x 13.4" Height. NOT compatible with iMac. Please compare your monitor size to the listing image on the left. Don't expose personal or business data to prying eyes. These filters darken your LCD screen if seen from the sides, while allowing clear vision for you. Keep your computers secure with these industry best protectors. Simple, quick and convenient secures to the monitor bezel without hassle or adhesives so you can easily take the privacy filter on and off your monitor. Reduce over 50% of harmful blue light. And its 9H hardness rating also provides a layer of physical protection to your screen. Made of Acrylic. It can effectively prevent screen from dust and scratch. Perfectly works in office / home for OL, gamer and programmer.