HomeDisposable Filter CartridgeFK-T4 Pre-filter 5µContact Us to PurchaseFeatures Quick-change cartridge design. Traps dirt, rust, and other impurities. All food grade material. Specifications Model Type Spec. Remark FT-82T4 FK-T4 type Cassette Cartridge 10" Note Do not use where the water is microbiologically unsafe or of unknown quality without adequate disinfection before or after the unit. The system is to be supplied only with cold water. The system and installation shall comply with applicable state and local regulations.