Specialty Filters

KDF2-4520 4.5" x 20" Coconut GAC + 2LBS KDF size cartridge. For City or Well Water Whole House or Commercial use. This filter is made from coconut ...

KDF85-20B 4.5" x 20" Coconut GAC + KDF85 Big Blue size cartridge. For Well Water or City Whole House filtration as well as Commercial use. This fil...

The CAT-4520 softening cation resin filter is used for the reduction of hard water using an ion exchange process. The CAT-4520 water softening filt...

Hydronix Whole House UDF-4520GACKDF2 4.5" x 20" Coconut GAC + 2LBS KDF, Big Blue size cartridge. This filter is made from coconut shell GAC in comb...

This 4.5" x 20" Alkaline cartridge is used to increase pH and neutralize the acidity of low-mineral water. This alkaline filter will improve the ov...

Hydronix DI-4520C Deionization Resin TDS Reduction Cartridge – 4.5" x 20" The Hydronix DI-4520C Deionization (DI) Resin Cartridge is designed to re...

The Hydronix UDF-20C200E Resin Water Softening cartridges are the best choice for your higher flow, water softening needs. Made with NSF certified ...