1.Universal filter replacement fits all standard and 10-inch whole house systems. 2.The whole house filter is designed with a three-layer density PP to remove most particles and sediment. The inner layer is absolute 5 microns; the middle layer is nominal 7 microns; while the outer layer is nominal 10 microns. 3.Multi-layer density technology can capture impurities in a targeted manner and have a 30% longer lifespan than other common type. 4.The filter can filter 20000-30000 gallons depending on the water quality. Suggest replacing it every 3-6 months for average household for optimal performance. size: 254 * 60mm Material: polypropylene color: white Package Contents: 9 * Filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.