Do it Wiser Compatible MLT-D203E Toner for Samsung ProXpress M3870FW M3820DW M4020ND M4070FR M3320ND M3370FW M3370FD M3820ND M3870FD M4070FX | 10,000 Pages Estimated page yield: 10,000 pages (depends on printer and usage) Compatible with part number MLT-D203E MLT-D203 MLTD203E For use in Samsung ProXpress M3320ND | Samsung ProXpress M3370FW | Samsung ProXpress M3370FD | Samsung ProXpress M3820ND Also compatible with Samsung ProXpress M3820DW | Samsung ProXpress M3870FW| Samsung ProXpress M3870FD | Samsung ProXpress M4020ND | Samsung ProXpress M4070FR | Samsung ProXpress M4070FX Our Do it Wiser smart toner cartridges are covered by a 1 year warranty against defects. Cartridges certified to work | ISO 9001 quality assurance | ISO 14001 environmental management | RoHS Lead Free 1 Black cartridge10,000 pages Samsung ProXpress M3870FW Samsung ProXpress M4020ND Samsung ProXpress M3820 Samsung ProXpress M3820DW Samsung ProXpress M3820ND Samsung ProXpress M4070FR