Lexmark E450H31E high yield return programme corporate cartridge for use in E450 printers. Approximate page yield 11000. Installing a genuine Lexmark Return Program Corporate Toner Cartridge (E450H31E) means prolonged reliability and sustained print quality from your Lexmark E450 series laser printer. As part of the Lexmark Cartridge Collection Program, this cartridge is sold at a discount. Simply pack it back into the box when empty and send it back to Lexmark via their free online service. This high yield black cartridge is packed with extra toner, allowing you to print up to 11,000 pages.