These printers use the TN-920UXXL cartridge:
Click On a Printer to View it's Cartridges
          Brother HL EX-415 DW
          Brother HL L-5210 DW
          Brother HL L-6217 DW
          Brother HL L-6310 DW
          Brother HL L-6415 DW
          Brother HL L-6415 DWT
          Brother MFC EX-915 DW
          Brother MFC L-5715 DW
          Brother MFC L-5915 DW
          Brother MFC L-6810 DW
          Brother MFC L-6915 DW