The Pentair R173214 Cartridge Element is a high-efficiency filtration component designed to enhance the performance of pool and spa systems. This cartridge element features a filter area of 75 square feet and is constructed from durable polyester fabric, which provides exceptional filtration capabilities and long-lasting durability. In pool and spa systems, the Pentair R173214 Cartrid... https://www.usapoolshop.com/r173214-pentair-cartridge-element-75sq