Replacement Water FilterCarbon BlockContact Us to PurchaseFeatures For big blue housing use. High flow rate applications. Remove chemicals and odors, such as chlorine and chemical fertilizer. Specification Model Type Spec. Remark FT-0027-1 commercial grade 20" 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.