3M Privacy Filter for 21.5 Inch Widescreen Monitor, Reversible Gloss/Matte, Reduces Blue Light, Screen Protection, 16:9 Aspect Ratio (PF215W9B)

Keeps your personal or confidential information safe from prying eyes. You'll see the information on your display while people on either side only see a darkened screen. Includes your choice of two easy-to-use attachment methods. Reversible, matte side reduces glare and reflections. Lightweight, thin, frameless design. Fits screen sizes of 21 1/2" diagonaly measured (Width 18 3/4",Height 10 9/16") Provides 1.5 times more effective privacy than competitive models. Helps protect your fragile LCD screen from damage Filter is reversible;Choose glossy or matte side Protects on screen data when viewed from the side keeping your electronic information confidential making it excellent for use in high traffic areas.