23.6 Inch (Diagonally Measured) Privacy Screen for Widescreen Computer – Akamai Products
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Amazon.com: Peslv Computer Privacy Screen 27 Inch for 16:9 Widescreen Monitor, Removable 27inch Anti Blue Light Anti Glare Monitor Privacy Filter Shield (23 9/16" x 13 1/4") : Electronics
Screen Privacy: How to Protect Yourself from Visual Hacking - ViewSonic Library