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 for safe filtration. Multi-layer Filtration: Our water purifiers use a multi-layer filtration system with activated carbon and an ion exchange resin to reduce odors. We include 30% more ion exchange resin compared to other filters (visible as a yellow substance inside), which helps reduce TDS and remove calcium, magnesium, chlorine, and other ions in water. Note: Actual filtration performance may vary depending on your water source. Protect the Environment: Each filter can purify approximately 40 gallons of water, equivalent to reducing the use of around 500 plastic bottles (300ml each). This helps minimize plastic waste and supports environmental protection. Replacement Models: Compatible with Zero water 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. For optimal performance and a fresh drinking water experience, we recommend replacing the filter every month. Replace the filter when the water begins to taste sour or off. Color: White Material: Plastic + Resin Package Contents: 3 x Water Filters Note: The package includes only the items listed above. Other products are not included. Note: Lighting and display settings may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.