Unicel C-8409 Swimming Pool Replacement Filter Cartridge (2 Pack)

Replacement C-8409 pool filter cartridge ensures your water stays clear so you can enjoy relaxing in your swimming pool Features 90 square feet (174 pleats) of 4-ounce basis weight media that catches debris and particles down to an average of 20 microns in size Sharp, uniform pleat folds maximize water flow, minimize pressure loss, and allow full use of the pleat surface to hold more debris Constructed with 100-percent polyester Reemay material that balances dirt-holding capacity, cleanability, and durability with excellent chemical resistance properties End cap design includes a 4-inch ID and an open configuration (with molded gasket) for easy cartridge removal and replacement Durable end caps resist damage from chemicals and assure durability for the life of the cartridge Compatible with Hayward Pool Products, Sta-Rite, and Waterway Filter life depends on routine maintenance of water chemistry Change filter when there is a shorter cycle between cleaning, low water flow rate or high differential pressure, when the media has a tear, or if the center core collapses Media material: Spun-bonded polyester End cap material: Plastic Top/Bottom end cap ID: 4 inches OD: 8-15/16 inches Length: 17-3/8 inches Overall dimensions (L x W x H): 8.94 x 8.94 x 17.38 inches Quantity: 2