Upgrade: The 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 include a multi-layer filtration system that uses activated carbon and an ion exchange system to reduce odors. This filter contains 30% more resin than other filters (the yellow substance visible inside is the resin), which helps effectively reduce TDS and remove calcium, magnesium, chlorine, and other ions in water. Please note: Filtration performance may vary depending on your water source. Protect the Environment: Each filter can purify up to 40 gallons of water, helping reduce the use of approximately 500 plastic bottles (300ml each), minimizing plastic waste and supporting environmental protection. Replacement Models: Compatible with water pitchers 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 fresh-tasting water, we recommend replacing the filter monthly. Replace the filter when the water begins to taste off or sour. Color: White Material: Plastic + Resin Package Contents: 3 x Water Filters (only the items listed are included; other products are not part of the package). Note: Lighting and display differences may cause slight color variations between the image and the actual product. Measurement may vary by up to +/- 1-3 cm.