Pentair OMNIFilter Whole House Water Filter Cartridge RS6-20-SC-S18

"RS6 OMNIFilter family of cartridges is manufactured from a durable, non-woven and reusable polyester fabric that is suitable for a wide range of filtration uses. The media is pleated around a polypropylene core for added strength. The heavy duty cartridges have a molded endcap with gaskets and the pleated ends are sealed to the endcap with a thermoplastic adhesive. The overlap seam is sonically welded to reduce internal bypass improving filtration efficiency. The standard 9.75"" length cartridge has more than four square feet of polyester fabric, while the larger 20"" version has more than 16 square feet. The media is pleated to maximize dirt holding capacity and extend the time period between changes or cleaning. RS6 Series Cartridges are resistant to both bacteria and chemical attack making them suitable for a variety of residential, commercial and industrial applications."