This WidescreenMonitorHanging PrivacyScreenFilteris high-transmittance at front side and the screen gets darker when looking from an angle (30. And it also blocksUV to protect your eyes and relieve eye fatigue to some extent. Feature:Removable & ReusableWith hanging design, easy to use. Free from the complicate installation. Dark Screen for OthersThe exact front side is high-transmittance, restoringthe colors that the screen displays. And when looking from an angle (30,it may be dark or even invisible. One Privacy Screen Filter Makes More Personal SpaceNo matter you are in office, public place, or taking exam, you are free from the peep from others, makes you work, study or play at ease. Besides, it makes exam more standard and just. Eye ProtectionIt blocks UV to protect your eyes and relieve eye fatigue. High TransmittanceWith this design, it restores the colors that the screen displays,as far as possible. Specification:Material: AcrylicItem size: 540x340mm/ 21.26* 13.39in Packing list:1 * Hanging Privacy Screen Filter1 * Cleaning cloth