The 28.2 cm (11.1 inch) [245.2 x 138.1 mm] is the size of the screen for a specific device that our website sells screen protectors for. Knowing the exact dimensions of the screen is important when selecting the appropriate screen protector to ensure a perfect fit and maximum protection. Our website offers a range of screen protectors specifically designed for this device, including tempered glass, anti-glare, and privacy screen protectors. By providing the exact screen size, customers can easily find the right screen protector for their device and protect it from scratches, cracks, and other damage.