Privacy filter keeps confidential information private. Only persons directly in front of the monitor can see the image on screen while others on either side of it see a darkened screen. It is great for high-traffic areas such as airports, airplanes, commuter trains, coffee shops and other public places. Filter is designed to fit wide-screen laptops with a diagonally measured, 15-9/16" viewing screen and a 16:9 aspect ratio. Actual filter dimensions are 13-9/16" wide x 7-5/8" high (345mm x 194mm). Filter includes your choice of two easy-to-use attachment methods. Reversible, matte side reduces glare and reflections. Lightweight, thin, frameless design protects display from dirt, debris and scratches. Clean easily with a soft cloth and water.