Based on this product's specifications, here are some alternatives and similar models
Monitor Privacy Screen StarTech.com PRIVSCNMON24
Summary description:
The StarTech.com Monitor Privacy Screen for 24 inch displays provides effective screen protection with a scratch-resistant design. It limits the viewing angle to +/-30 degrees, ensuring that only the user can see the screen clearly. This filter also reduces blue light exposure, making it ideal for long hours of work. Weighing only 98g, it is easy to install and compatible with 16:9 widescreen monitors.