Hi, I'm looking to purchase a used c4520/5520 filter but i am unsure if the filter cardtridges are interchangeable. Will this cardtrige work in the 4520 or is there another cartridge specific for the 4520 model?

Question

Lennox H. · Accepted Answer

Hi, Chris. This cartridge will not fit the C4520 unit, you will need the OEM - CX875RE or Generic - PL0113 cartridges.

Question Regarding: Pureline 137 Sq. Ft. Replacement Cartridge Compatible with Hayward® C5520/C5525 (PA137) - PL0115

Hi, I'm looking to purchase a used c4520/5520 filter but i am unsure if the filter cardtridges are interchangeable. Will this cardtrige work in the 4520 or is there another cartridge specific for the 4520 model?