Model # WFFMC303X

Internet # 203445530

Ultimate Faucet Mount Replacement Cartridge (3-Pack)

This item has been discontinued.
The Home Depot no longer carries this specific product.



Model # WFFMC303X

Internet # 203445530

The DuPont 3-pack Ultimate Faucet Mount Replacement Cartridge fits all DuPont faucet mount systems. Each cartridge filters 200 gal. The cartridge includes Microban antimicrobial product protection built into the cartridge housing and media for improved filter life and performance.

  • Reduces sediment, chlorine, cysts, lindane, benzene, asbestos, mercury and lead
  • Improves taste, odor, and clarity of your water
  • 4 Phase protection: Proprietary ingredients, high quality carbon, sediment reduction, Microban antimicrobial
  • Includes Microban antimicrobial product protection built-in for improved filter life and performance


Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Brand/Model Compatibility 
DuPont FM350, FM300, FM100, WFFS150XCH 
Filtration method 
Carbon Block 
Product Weight (lb.) 
.34 lb 
Water Filtration System Type 
Under Sink 
Warranty / Certifications
Manufacturer Warranty 


Review Rating: 4 & Up
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Rated 4.4 out of 5 by 7 reviewers.
Rated 1.0 out of 5.0 by Worst purchase The cartridges to a DuPont water filter are claimed to filter 200 gallons each. The first cartridge lasted only 24 gallons until the filtered water flow reduced to just dripping. The second cartridge survived for 33 gallons (1.5 months). The quality of filtered water is inferior to Brita's 100-gallon cartridges which lasted 3 months. Hence the DuPont's cartridges are actually greatly overpriced and unpractical. August 30, 2015
Rated 5.0 out of 5.0 by What can I say? If you have a Du Pont filter unit on your tap you have to buy cartridges for it. These are the higher capacity ones and give me 3 months use each. After the large bundle this is the most cost effective purchase option. Home Depot shipping to my home makes this super convenient. August 25, 2015
Rated 5.0 out of 5.0 by Performs better than Pur These filters are easy to install, has NO leaks (like Pur does), and helps purify all water for drinking and cooking. They are also a much better value than their competitors. July 18, 2015
Rated 5.0 out of 5.0 by Best price & value Home depot online offered the best price and value for the replacement cartridges. After searching other online options I chose HD. They alerted me when the product arrived in store and I was able to easily stop by the online order desk and pick it up. In and out in less than 5 minutes. October 21, 2014
Rated 5.0 out of 5.0 by great filtration product filtration has a high preformance rate that allows customers with hard water and water that smells like sulfer not to have to buy a water softener if one cannot be afforded . drastically cuts down on horrible taste from a well or old pipes and removes all odor from water. im not saying that most people dont need a water softener just that this will in-expensivly filter 200 gallons of potable water per. filter for cooking and drinking. July 14, 2013
Rated 5.0 out of 5.0 by Difficult to find Home Depot was the only place I found that carried these replacement cartridges. I bought the DuPont faucet mount system 2 years ago with a couple replacement cartridges. When it was time to replace the cartridge, I couldn't find them anywhere. Thank goodness Home Depot still carries them! I have an artesian well and the filtering makes the water safer to drink. October 22, 2013
Rated 5.0 out of 5.0 by Great Filters I use the Dupont water filter because it looks nicer (I have the chrome one) than the ones offered by other manufacturers. The 200 gallon filter I have used for 400 gallons before I had flow loss. Keep in mind that the filters should be changed every 3 months no matter what the gallons used are. November 12, 2013
  • 2016-05-28 T15:23:35.800-05:00
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