This is an OEM refill designed for use with the LS950 laminating system (sold separately). It offers instant, heat-free, front-side and back-side lamination, making it ideal for presentations, 3-ring binder sheets, schedules, and frequently used documents. The cartridge measures 8-1/2" wide and 100 feet long, with a thickness of 5.6 mil, providing durable protection for your important documents.