The 43.2 cm (17 inch) [341 x 273 mm] measurement refers to the size of the screen that our website sells screen protectors for. This size is commonly found in laptops, desktop monitors, and all-in-one computers. By offering a range of screen protectors specifically designed for this size, our website ensures that customers can find the perfect fit for their device and protect their screen from scratches, smudges, and other damage. With a variety of materials and features available, our screen protectors provide a reliable and effective solution for keeping screens looking like new.