Disposable Filter CartridgeFK-T4S Pre-filter 5µContact Us to PurchaseFeatures Unique housing base makes cartridge erect available. Quick-change cartridge design. Traps dirt, rust, and other impurities. All food grade material. Specifications Model Type Spec. Remark FT-82T4S FK-T4S 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.