The 31.8 cm (12.5 inch) [277 x 156 mm] is a screen size measurement that is commonly found in laptops and tablets. Our website sells a range of screen protectors that are specifically designed to fit this screen size. These screen protectors are made from high-quality materials that provide excellent protection against scratches, smudges, and other types of damage. They are easy to install and remove, and they do not affect the clarity or responsiveness of the screen. Whether you are looking for a basic screen protector or a more advanced one with additional features, we have a wide selection to choose from that will meet your needs and budget.