SuppliesMax HP 21 Black Inkjet Cartridge 2-Pack 190 Pages

SuppliesMax HP 21 Two-Pack Black Inkjet

This SuppliesMax two-pack replaces the HP C9508FN cartridge and fits the listed DeskJet and OfficeJet printers. Each cartridge is remanufactured to meet OEM specifications and delivers black output for everyday documents and photos. The pack suits home users and small offices that print moderate volumes and want a lower-cost alternative to original cartridges.

Sustained Output 190 Pages at 5% Coverage

The rated yield of 190 pages per cartridge is measured at five-percent page coverage, so actual page counts will drop with dense text, graphics or photo printing. Ink formulation is designed to maintain consistent density and sharpness across the life of the cartridge without sudden fade. Print heads are cleaned and tested during remanufacture to reduce the risk of clogging during extended idle periods.

Check Printer Model and Voltage Before Ordering

Verify that your printer appears in the compatibility list, which covers numerous DeskJet series including 3900, D1300, D2300, F2100 and F300 models. These cartridges are engineered for 110-volt U.S.-region printers, so confirm your hardware matches that electrical specification. Buyers who need colour output or a higher page yield per cartridge should look for a different product.