- Make sure this fits by entering your model number.
- High Capacity up to 2500 gallons or one year usage
- Made in The United States
- High Quality Chloramine filter to reduce the Ammonia
- Recommended to change the filters once every year
This fits your .
Replacement filters for Aquatron GQM 121-75 Reverse Osmosis system. This product only fits GQM series reverse osmosis systems made by Aquatron, Inc.