The 38.4 cm (15.1 inch) [306.2 x 229.8 mm] is the screen size of a specific device for which our website sells a range of screen protectors. This measurement is important for customers to know as it ensures that they purchase the correct size of screen protector for their device. Our website offers a variety of screen protectors that are designed to fit this specific screen size, providing protection against scratches, cracks, and other types of damage. By offering a range of screen protectors for this size, we aim to provide our customers with the best possible protection for their device's screen.