Universal water filter replacement fits any standard 10 inch RO and whole house systems. The whole house water filter is designed with three PP density layers to remove most particles and sediments. The inner layer is Absolute 5 Micrometre; the middle layer is nominal 7 Micrometre; the outer layer is nominal 10 Micrometre. The multi-layer density technology can capture impurities effectively and offers 30% longer service life compared to standard filters. This filter can process 20,000 to 30,000 gallons, depending on water quality. It is recommended to replace every 3 to 6 months for optimal performance in an average household. Size: 254 x 60 mm Material: Polypropylene Color: White Package Contents: 3 x Filter Note: Light reflection and different display settings may cause slight color variations between the image and the actual item. Measurement allowance is +/- 1-3 cm.