From Amazon
Leitz Trusens Allergy and Flu Carbon Replacement Filter For Leitz Z-1000 Air Purifier, Removes Common Odours and VOCs, Pack Of 1, 2415116
Viking Direct
TruSens Carbon Filter 2415116 1.424 x 0.772 cm
OnBuy
Replacement Carbon filter for Leitz TruSens Z-1000 Small Allergy and Flu Filter 2415116