From Amazon
Bosch Home and Garden Water Filter (plastic, Compatible with: EasyAquatak 110/120, UniversalAquatak 125/130/135, AdvancedAquatak 140/150/160, AQT 45-14X/33-10/33-11/35-12/37-13/40-13/42-13/45-14 X)
OnBuy
Bosch Water Filter (plastic, Compatible with: EasyAquatak 110/120, UniversalAquatak 125/130/135, AdvancedAquatak 140/150/160, AQT