These printers use the KX-FA91 cartridge:
Panasonic KX FC-225 E
Panasonic KX FC-226
Panasonic KX FC-228
Panasonic KX FC-253
Panasonic KX FG-2425
Panasonic KX FG-2858
Panasonic KX FG-5643
Panasonic KX FG-5658
Panasonic KXFP 205
Panasonic KX FP-215
Panasonic KX FP-215 E
Panasonic KX FT-205
Panasonic KX FT-206
Panasonic KX FT-207
Panasonic KX FT-208
Panasonic KX FT-215
Panasonic KX FT-218
Panasonic KX-FG2451
Panasonic KX-FG5641