Carbon Block Cartridge (ESU)
Take out chlorine and other nasty organic and chemical substances with this carbon prefilter for your Pure Flo II RO unit! Increase the life of your membrane filter with this prefilter.
Replacement for the Pure-Flo II RO's: ES0952, ES0953, ES0973, ES0974 and ES0975.
Replace every 3000 gallons or 6 months.
Remove plastic wrapper before installation. Flush cartridge with tap water for a minimum of 5 minutes before use.