The 43.9 cm (17.3 Inch) [383 x 215 mm] is the size of the screen that our website sells screen protectors for. This size is commonly found in laptops and notebooks, and our range of screen protectors are designed to fit perfectly on these screens. Our screen protectors are made from high-quality materials that provide excellent protection against scratches, smudges, and other types of damage. With our range of screen protectors, customers can ensure that their laptop or notebook screen stays in pristine condition for longer, extending the life of their device and improving their user experience.