Free Shipping on orders over $99 | FREE 365-DAY RETURNS
Filters Fast Logo Header
Free Shipping Item Banner

Hydronix UDF-20 H Replacement for Liquatec UDF-20 GAC Filter 12-Pack


Only $21.12 per Filter
Retail: $24.99 /ea
You Save: 15%
As low as
Retail: $24.99
You Save: 15%
Ships in 17 to 18 business days. Home Filter Club
Home Filter Club

Sign up for the Home Filter Club in checkout. You choose how often you want your filter, and we take care of the rest.

The Hydronix UDF-20 H 20" Activated Carbon GAC Filter Cartridge is granular activated carbon (GAC) coconut shell water filter replacement cartridge used to reduce the bad taste and odor of chlorine in a variety of low-flow applications such as under sink, countertop, and pre/post-reverse osmosis water filtration systems. This filter may also be used in some humidifying systems, recreational vehicle filtration systems, and food service applications.

The Hydronix UDF-20 H carbon filter features coconut shell granular activated carbon (GAC) technology for more advanced water filtration, maximum chlorine absorbtion, and better tasting water. The coconut shell GAC design of these filters are some of the most effective water filtration media for the reduction of organic compounds such as chlorine, VOCs, radon, and other impurities. They are axial flow filters, meaning they are designed to force water to pass through the entire carbon filter media in order to ensure thorough filtration.

This Hydronix UDF-20 H 20" GAC filter is a compatible replacement water filter cartridge with similar 20" GAC filters including the Pentek GAC-20, Watts WGAC-20, Pentek RFC-20, Ametek GAC-20, Culligan GAC-20, Whirlpool, US Filter, Ace, American Plumber, Bruner, Plymouth, Pentair, and other name brands. It will fit all water filter housings which use GAC-20, GAC20, CGT-20, and any other 20" x 2 1/2" GAC filter replacement cartridges.

Hydronix UDF-20 H 20" Granular Activated Carbon Coconut Shell Filter Specifications (UDF-20):

  • Dimensions: 20" x 2 1/2"
  • Filter Life: 12 Months
  • Min./Max. Temperature: 40 - 125 F
  • Cartridge Body: Polyethylene
  • Expansion Pad Media: Polypropylene
  • Max. Flow Rate: 1 Gallon Per Minute (GPM)
  • Filter Media: Coconut Shell Granular Activated Carbon (GAC)

Product Availability

Please provide your e-mail address below to receive a notification when this product becomes available:


Thanks! We'll send you a notification when this product is available!