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 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 standard filters (the yellow substance visible inside is the resin), which helps reduce TDS and remove chlorine, calcium, magnesium, and other ions. Note: Filtration performance may vary based on regional water conditions. Protect the Environment: Each filter can purify up to 40 gallons of water, helping reduce plastic bottle usage and supporting environmental conservation. Replacement Models: Compatible with Zero Water pitchers 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, replace the filter monthly. When the water begins to taste off or sour, it's time for a replacement. Color: White Material: Plastic + Resin Package Contents: 3 x Water Filters (only the items listed are included) Note: Lighting and display differences may cause slight color variations between the image and the actual product. Measurement may vary by +/- 1-3 cm.