Nature2 Above Ground Replacement Cartridge

A30 Aboveground Cartridge Nature2 Above Ground Replacement CartridgeTreats up to 30,000 gallons (Use with W20040 A2 Vessel)Nature2 Above Ground replacement A30 cartridge is designed to fit the Above Ground “A” unit (W20040) easily and effectively lowers chlorine consumption. The Nature2 technology uses silver and copper to sanitize your pool water lowering the chlorine necessary to keep your pool clean and clear saving you time and money.Simple and quick installationLasts up to 6 months* Lower your chlorine consumption by up to 50%