FW1020 Puretech Z Series RetroFit Kit Posted onDecember 13, 2021AuthorMichelle FW1020 Puretech Z Series RetroFit Kit Replacement Head suit Z Series Replacement head for Puretec Z series system / retrofit kit for other brands. Includes 1/2″ M Connector, stem adaptors and 1/4″ tube connector. SKU: FW1020 Category: Water Filtration Related products FWC1040 Moulded Carbon Cartridge 10 Inch 1UM Silver FWC1055 Ultra Z Platinum Replacement Cartridge FWC1045 Inline Triple Action Cartridge 10 x 2 Inch 1/4 Quick Change T Connection FWC1050 Inline Fridge Filter Cartridge 10 inch 5UM