Size:1 Pack Sold as each. Double action. Cartridge contains a pre and post filter. Uses activated granular carbon for maximum effectiveness. Long life graded density depth filtration. Manufactured from FDA CFR-21 compliant materials. AP-217 for dirt, rust, chlorine taste and odor reduction (5 micron nominal). Replacement for SKU # 4206553 filter. Shrink-wrapped. Manufacturer number: 46290-02. Country of origin: United States. Distributed by Cuno, Inc. From the Manufacturer Aquapure by Cuno replacement cartridge for drinking water system filters. The carbon filter cartridge features double action for dirt, rust, chlorine taste and odor reduction. The Aqua-Pure AP217 Filter cartridge contains a pre and post filter with activated granular carbon for maximum effectiveness featuring specially formulated high-absorption activated carbon.