Pleatco PRB25SF-PAIR Replacement Cartridge for Dynamic Series IV, Model DSF, DFML-25C, Waterway Models, 2 Count

This is a replacement cartridge for Pleatco's Dynamic Series IV, DSF, dfml-25c, and waterway models, designed to enhance water flow and extend filter life.

• The description claims that the cartridge maximizes water flow through its 50 percent open ABS cores and provides support to filter material via end caps.