The laptop privacy filter has a universal design that is compatible with 17.3" screens with a 16:9 aspect ratio. The anti-glare design provides visual comfort and reduces the negative effects of blue light from the screen. Its reversible design means you can quickly adapt to different lighting conditions throughout the day. Prevent eavesdropping This privacy filter is a practical and cost-effective solution to protect confidential data from prying eyes. The privacy filter darkens the computer screen from the side while giving the user a clear viewing angle of 60 degrees (+/- 30 degrees from the center). Reversible filter The privacy filter is reversible, with a matte anti-glare surface suitable for environments where screen glare is common, and a high-gloss side to help maintain color vibrancy. The matte side provides additional screen protection with a fingerprint and scratch resistant coating. The privacy shield has a light transmission of 57.5%, providing optimal screen brightness and increased privacy protection. Hassle-free installation Attach the privacy filter with the included residue-free transparent adhesive strips or with the side mounting tabs. The cutout in the top corner of the privacy filter makes it easy to remove it to share content with trusted audiences or switch between matte and glossy surfaces. Blue light reduction Reduce eye strain and improve visual comfort with this blue light reduction privacy filter. It blocks up to 51% of the blue light emitted from the screen in the 380-480 nm wavelength range. Digital eye strain can lead to symptoms such as headaches, dry eyes and blurred vision.The StarTech.com Advantage