Startech Privcyscrn23M - Computer Monitor Privacy Screen For Security Outside +/-30 Viewing Angle Ensures Your 16:9 23" Widescreen Desktop Display Is Confidential. Mount W/ Adhesive Strips That Won'T Leave Permanent Residue - Apply The Removable Monitor Privacy Filter To Monitor Bezel W/ Side Mount Tabs Or Directly To Screen For Long Term Use - Relieve Eye Strain By Reducing Blue Light 30%-40% - Screen Protector Prevents Scratches Fingerprints Dust - Reversible Anti-Glare Matte Or High Clarity Glossy Finish Cover