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Home > Replacement Water Filters > Filters for 20 inch Big Blue Housings

Intelifil (IF-SM-KDF85020B) 20"x4.5" 40,000 Gal. KDF-85/GAC Hydrogen Sulfide & Iron Reduction Filter

Intelifil (IF-SM-KDF85020B) 20"x4.5" 40,000 Gal. KDF-85/GAC Hydrogen Sulfide & Iron Reduction Filter


Retail Price:: $147.91

Your Savings:: $22.92

Your Price: $124.99


Availability: Ships within 24-72 hours

Choose Options

Quantity Discounts
Quantity Price
2 - 3 $122.15
4 - 7 $116.24
8+ $112.49


The Intelifil KDF 85TM/Granular Activated Carbon Cartridges have superior taste and odor removal capabilities. The dark granular KDF in this cartridge specializes in the removal of iron and hydrogen sulfide. The black granular coconut shell activated carbon reduces organic and chlorine. This is an excellent taste and odor filter that removes a wide range of contaminants.

KDF media controls scale, bacteria and algae, even in hot water. KDF media causes cellular damage to microbiological organisms which can kill or inhibit any growth.

These types of filters are perfect for either drinking water units or whole house filters. For more information on KDF media,please click here or go to www.KDFFT.com


  • Sediment
  • Chlorine
  • Hydrogen Sulfide
  • Iron
  • Lead
  • Mercury
  • Arsenic
  • Copper
  • Scale
  • Lime
  • VOCs
  • THMs
  • and much more!


  • Micron Rating: 10 Nominal
  • Dimensions: 20" x 4.5"
  • Total Weight: 10 lbs 6 oz
  • Operation Temperature: 40°F to 100°F
  • Max Recommended Flow Rate: 4 GPM
  • Filter Media: KDF-85 TM & Granular Activated Carbon
  • Filter Life: 40,000 Gallons


Love this filter! We've been using this filter along with a 5micron filter for our whole house water system for a few years now and its amazing. We find that that it performs as it claims and I even do a water test with a kit a couple times a year just to check. Amazing difference in taste and smell as well as eliminating our need for appliance repair due to mineral build-up we used to have. Definitely recommend.
Reviewed by: Sally from Ventura County, CA. on 4/18/2013
Even though isopure lists this filter as 40,000gal kdf-85/gac hydrogen sulfide and iron reduction filter, that is not it's purpose. It is only good for 3000 gal hydrogen sulfide reduction. The 40m gal discription is for chlorine only and who would spend $110 when a $35 carbon block filter will remove more chlorine. False advertising at its best!
Reviewed by: Douglas Munk from Dell Rapids, sd. on 10/29/2012