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Dual Under Sink Water Filter, 7-Stage

Crystal Quest Dual Undersink Water Filter CQE-US-00306, CQE-US-00306
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Brand:Crystal Quest
Dimensions:14" x 10" x 5"
Weight:9 LBS.

Ships in 2-3 days

Filter cartridge(s) included.
Made in USA

Dual Undersink Water Filter, 7-Stage - two cartridge filtration system by CRYSTAL QUEST(Also known as Mega 2000). This Under Counter Water Filtration System saves kitchen counter space and employs a multistage cartridge with a solid state water filter that uses the latest technologies in blending the adsorption capabilities of coconut shell activated carbon(GAC) with Eagle Redox Alloy and more. Another cartridge designed into this system, Solid Carbon, removes Volatile Organic Compounds (VOC's, insecticides, pesticides and industrial solvents). Its 7-stage filtration process eliminates hundreds of impurities from tap water giving your family a continuous supply of pure, great tasting and healthy drinking water. The perfect solution for any household, apartment or office.

Quick, easy to install and use! The whole system is attractive, convenient and effectively removes many contaminants from water. Can also be installed on refrigerators/ice makers(requires this optional hook-up, sold separately).

Undersink water filter installation

Key Features and Benefits:

  • 7 Stages of filtration.
  • Installs neatly under the sink.
  • Comes with an attractive faucet and all necessary installation hardware.
  • Conveniently provides years of filtered water(depending on configuration).
  • Combination of Solid Carbon, Granulated Activated Carbon(Coconut Shell) and Eagle Redox Alloy.
  • Replaceable filters.

7 Stage Under Sink Filtration Process


SKUFiltration Capacity (up to)Filter Life
Undersink-W13-PLUS [ CQE-US-00306 ] *(CQ-RC-PL-10, CQE-RC-04002)10,000 gallons1-3 years
Undersink-W13-ULTRA [ CQE-US-00307 ] *(CQ-RC-UL-10, CQE-RC-04003)20,000 gallons2-4 years
Undersink-W13-ULTIMATE [ CQE-US-00308 ] *(CQ-RC-UM-10, CQE-RC-04004)30,000 gallons3-5 years


Dimensions(LxHxW):10"x14"(10"+ 4" to change cartridge)x5"
Operating Temperature (°F):40°F - 90°F
Operating Pressure(PSI):20 psi - 60 psi
Design Flow Rate(Gallons per Minute, gpm):0.5gpm(suggested)
Solid Carbon Filter Life:6-9 months
Fitting Size(inches):1/4"(Also available in 3/8")
Weight(lbs):9 lbs
End Caps:Polypropylene #5
Inner/Outer Wraps:Polyolefin
Netting:Food Grade High-density Polyethylene

- System comes with a faucet, 1/4" water line to connect it to supply, and installation hardware.
- On installation, if current under sink plumbing is hard copper tubing the saddle valve would be used; for flex tubing the T-valve would be required. Please specify in Notes on the Shopping cart screen at checkout if you have a preference, otherwise you may get one or the other.
** Another available system that does not include a faucet is the Voyager Undersink Inline Filter Series(CQE-IN-00306, CQE-IN-00307 and CQE-IN-00308).

BPA-free logoEagle Redox AlloyNSF 42 certification
NSF Standard 42
NSF 61 certification
NSF Standard 61


Replacement Filters and Parts
Price Quantity
Carbon Block Filter CQ-R5
Carbon Block Filter CQ-R5 is a standard 10"x2.5" 5-micron Coconut Shell Carbon Block replacement filter cartridge. it removes chlorine, bad ta...
Product # CQ-R5
6-stage Water Filter Cartridge
6-stage Filter Cartridge by CRYSTAL QUEST, a standard 10"x2.5" replacement filter cartridge that is commonly utilized in different combo-filtr...
European Faucet for Undersink Filter
European-style faucet for undersink water filters. Nickel-plated european style upgrade faucet for Crystal Quest under sink filtration systems, and other under counter filt...
O-Rings for 10x2.5 Housing
O-Rings for Counter Top or Under Sink 10x2.5 inch water filter housings, set of 3. ACTUAL Diameter: 3.5" (90 mm). Available in clear or black, for different systems, please choose id...
Product # CQE-PT-03082
Alkaline SMART Multi Stage Cartridge Alkalizing SMART Multi Stage Cartridge 10"x2.5" offers latest technologies in water purification. Can be used in place of our 6-stage Cartridge. From several blends o...
Product # FW-AKS

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