Item model number: 56F1H00. Page Yield: 15000. Extended Page Yield: Prints up to 15,000 pages (at 5% coverage), compared to 6,000 pages from standard 56F1000 ideal for offices with heavy usage. Compatible with Lexmark Printers: Work for MS321dn, MS421dn, MS421dw, MS521dn, MS621dn, MS622de, MX321adn, MX321adw, MX421ade, MX521ade, MX521de, MX522adhe, MX622ade, MX622adhe Laser Printer.
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