Looking for a DI filter cartridge for 4x40" housings? This is it. These one-time-use DI filter cartridges fit the 4x40" housings from many manufacturers. Filled with our virgin resin, these filters will remove all of the impurities in your water to make spot-free water.

This is NOT the replacement DI cartridge for the 4060 system. The correct replacement DI filter for the 4060 is the 4 X 30" FILTER CARTRIDGE - DI RESIN