FW1020 Puretech Z Series RetroFit Kit Posted onDecember 13, 2021AuthorMichelle 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 FWC1010 Filter Housing Kit 10 Inch Silver with Black Head 3/4 Connection FW1005 Puretech Quick Twist Drinking Water System with Ultra Z Technology FWC1050 Inline Fridge Filter Cartridge 10 inch 5UM FWC1000 Puremix Z7 Replacement Cartridge