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