Upgrade: This water filter features an additional rubber seal layer to prevent unfiltered water from leaking. The filter housing is made of environmentally friendly, food-grade plastic to ensure safe and reliable filtration. Multi-layer Filtration: Our water purifiers utilize a multi-layer filtration system with activated carbon and an ion exchange resin to reduce odors and improve taste. Contains 30% more ion exchange resin than comparable filters (visible as yellow granules), helping to effectively reduce TDS, chlorine, calcium, magnesium, and other ions. Note: Filtration performance may vary depending on local water conditions. Eco-Friendly: Each replacement filter can purify up to 40 gallons of water, reducing the need for single-use plastic bottles and helping minimize environmental impact. Compatibility: These zero water replacement filters are compatible with pitcher models ZR-001, ZR-003, ZR-004, ZR-006, ZR-008, ZR-012, ZR-017, ZR-600, ZP-007RP, ZD-013W, ZD-013D, ZR-0810G, ZR-0810-4, ZP-010, ZD-010RP, ZS-011RP, ZD-012RP, ZD-20RP, ZD-018, ZD-030RP, ZJ-003, ZJ-004S, ZP-006-4, ZBD-040-1. Replacement Recommendation: For optimal performance and fresh-tasting water, replace the filter every month or when the water begins to taste sour, indicating the filter has reached capacity. Color: White Material: Plastic + Resin Package Contents: 3 x Water Filters