DuPont 3 Stage QuickTwist Purifier Undersink Water Filtration System-WFQT390005 - The Home Depot
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Model # WFQT390005

Internet # 203444335

3 Stage QuickTwist Purifier Undersink Water Filtration System

DuPont 3 Stage QuickTwist Purifier Undersink Water Filtration System

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

$148.79 / each


Model # WFQT390005

Internet # 203444335

The DuPont 3-Stage QuickTwist Undersink Water Filtration Purifier System features the best residential filtration on the market for organic contaminants. The system includes 2- 7000 series cartridges in parallel to provide a great 1 gpm flow rate to its own separate faucet. It removes CTO, VOC's, Cysts, and Heavy metals and the Purifier Cartridge to remove viruses & bacteria. This system does not require a tank or drain to install - unlike the RO systems. This is a QuickTwist system with auto water shut-off. If you want the best quality water, low-profile design, easy to install, and a great flow rate - this is the system for you.

  • Designer cover with built-in mounting bracket
  • Push-on tube fittings for easy D-I-Y installation
  • Not approved for sale in California and Wisconsin
  • 1,000 gal. filter life - lasts up to 6 months
  • Not registered for sale in the states of CA and WI

Info & Guides

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Assembled Depth (in.) 
4 in 
Assembled Height (in.) 
11.75 in 
Assembled Width (in.) 
12 in 
Fitting size (in.) 
Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Automatic shutoff 
Faucet Included 
Filtration method 
Hollow Fiber Membrane 
Fitting style 
Quick connect 
Hardware Included 
Installation kit included 
Maximum feed water pressure (psi) 
Maximum feed water temperature (F) 
Maximum filtered water flow (gallons per min.) 
Minimum feed water pressure (psi) 
Minimum feed water temperature (F) 
Number of stages 
Product Weight (lb.) 
4.35 lb 
Water Filtration System Type 
Under Sink 
Water Filtration Technology 
Hollow Fiber Membrane 
Warranty / Certifications
Certifications and Listings 
NSF Listed 
Manufacturer Warranty 
3 year 


Rated 4.0 out of 5 by 4 reviewers.
Rated 4.0 out of 5.0 by Easy intall; Plastic faucet; I got this model because it has the auto-shut off feature. My house was just flooded by an Omi-filter that broke open. The line connection is very easy. I was disappointed in the faucet. It is plastic with a chrome paint. It is also bulky, probably because they need the density because it is plastic. I decided to keep my real metal chrome faucet in place, making the install even easier. The flow rate is not as fast as the Omi-filter, but faster than my refrigerator. The water tastes great and I cannot tell the difference between the tap and Dasani. April 15, 2014
Rated 4.0 out of 5.0 by producing good-tasting drinking water made multiple trips to Home depot to find correct fitting pieces, other than that the installation was easy. The unit works fine so far for about two weeks. The water tastes great. September 17, 2013
Rated 5.0 out of 5.0 by Really Like This System Very easy to install and this sytem does an excellent job. We have stopped buying bottled water which saves us about $90 a month. Great price and a great way to cut costs from our budget. February 12, 2014
Rated 3.0 out of 5.0 by not as good as reverse osmosis system does an ok job , but taste wise cannot beat a reverse osmosis system November 23, 2013
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