The Qoltec blue light filter is a high-quality monitor screen protector specifically designed for screens with a 16:9 aspect ratio and a size of 21.5 inches. This film provides effective glare protection and reduces eye strain by filtering harmful blue light. The matte surface minimizes reflections, leading to a more comfortable viewing experience, especially during extended screen time. With a length of 476 cm, a height of 56 cm, and a width of 34 cm, the film fits most monitors of this size perfectly. Weighing only 0.25 kg, it is easy to apply and handle. This screen protector is a sensible investment for anyone looking to protect their eyes from overexertion while also improving their monitor's image quality. It is easy to apply and remove without leaving any residue, thus contributing to the longevity of the screen.