New Upgrade: This water filter features an additional rubber seal layer to prevent unfiltered water from leaking. The filter housing is made from environmentally friendly, food-grade plastic for safe and reliable filtration. Multi-layer Filtration: Our water purifier uses a multi-layer filtration system with activated carbon and an ion exchange resin to reduce odors and improve taste. It contains 30% more ion exchange resin than standard filters (the yellow substance visible inside is the resin), which helps reduce TDS and remove calcium, magnesium, chlorine, and other ions. Note: Filtration performance may vary depending on your water source. Environmental Benefit: Each filter can purify up to 40 gallons of water, helping reduce plastic bottle waste and supporting environmental protection. Replacement Compatibility: These filters are 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, and ZBD-040-1. For best results, replace the filter monthly or when the water begins to taste sour, indicating the filter has reached capacity. Color: White Material: Plastic + Resin Package Contents: 1 x Water Filter (only the item listed, other accessories not included) Note: Slight color variations may occur due to lighting and screen settings. Measurement may vary by +/- 1-3 cm.