The 28.2 cm (11.1 Inch) [245.2 x 138.1 mm] is the screen size of a specific device, and our website sells a range of screen protectors that are specifically designed to fit this device. These screen protectors are made from high-quality materials that provide excellent protection against scratches, cracks, and other types of damage that can occur to the device's screen. By offering a range of screen protectors that are specifically designed for this device, we are able to provide our customers with a high level of protection and peace of mind, knowing that their device is well-protected against damage.