Reuse this cartridge by reloading it with film refills. Comes pre-loaded with film and auto-threads when inserted into your laminator. Glossy finish. 3 mil thickness protects documents while retaining moderate flexibility. Size 3 mil cartridge has 185 in of film and laminates approximately 230 letter size sheets. Cartridge is compatible with GBC 3 Mil Reloadable Film Refills and the Foton 30 Laminator, sold separately.