Replacement cartridges for the Waterway Crystal Water 525 sq. ft. filter system.
Hint: Keep a extra filters on hand so that when its time to clean your filters, you will be able to replace them immediately with the back-ups. This will allow you the time to leisurely deep clean your dirty filters and allow them to dry completely before replacing them without any downtime on your pool. *Never use a power washer to clean your filter.
Dimensions: