These printers use the KX-FA133 cartridge:

Panasonic Fax KX-F 1000

Panasonic Fax KX-F 1020

Panasonic Fax KX-F 1050

Panasonic Fax KX-F 1070

Panasonic Fax KX-F 1100

Panasonic Fax KX-F 1150