The 10 x 4.5 inch pleated polyester filter replacement kit by Tier1 includes everything you for filter change maintenance. The exclusive kit includes a 30 micron pleated polyester R30BB Pentek comparable filter, replacement O-ring, and lubricant packet to make your next filter change a breeze. The experts at Tier1 have worked hard to ensure this kit contains the filter and component you need to finish the job. Water taste and quality is critical business, the R30BB Pentek comparable filter by Tier1 captures dirt, sand and sediment down to 30 microns. The system installs quickly and easily, order today!