The 38.4 cm (15.1 Inch) [306.2 x 229.8 mm] is the screen size of a specific device that our website sells a range of screen protectors for. It is important to know the exact screen size of your device to ensure that you purchase the correct size screen protector. Our website offers a variety of screen protectors that are specifically designed to fit this screen size, providing protection against scratches, cracks, and other types of damage. By choosing the right screen protector for your device, you can ensure that your screen stays in pristine condition and prolong its lifespan.