This privacy filter for laptops is designed to work with laptops featuring 13.5-inch screens and a 16:10 aspect ratio. Prevent prying eyes. This privacy filter is a practical and cost-effective solution to protect confidential data from unwanted views. The privacy shield darkens your laptop screen from the sides while providing a clear viewing angle of 60 degrees (+/- 30 degrees from the center) to the user. Flip and touch. This feature allows you to quickly flip the privacy filter to share content without uninstalling it. The touch responsiveness of your laptop is preserved by the ultra-thin yet sturdy security shield, enabling smooth use. The privacy shield has a light transmittance of 60%, providing optimal screen brightness and enhanced levels of privacy. Hassle-free installation. Install the privacy screen protector using the included adhesive strips or flip tabs. This unit is designed to be used with frameless or thin-bezel screens. Blue light reduction. Reduce eye strain and improve visual comfort by decreasing exposure to blue light. The 13.5-inch laptop screen filter blocks up to 51% of the blue light emitted by the screen. Digital eye strain can result in symptoms such as headaches, dry eyes, and blurred vision. PROTECT YOUR SENSITIVE VISUAL DATA: The filter uses microlouver technology that darkens the view of your 13.5'' PC screen from the sides (+/- 30 degrees from the center).