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US-EZ-4 Culligan Level 4 Easy-Change Undersink Filter System

Price $112.99 List Price Price $161.99 Save 30%
Availability: In Stock - Free Shipping
  • Culligan's best US-EZ series filter, removes more contaminants than the US-EZ-3 filter
  • Installs easily with built-in quick-connect fittings
  • Easily change filters with no mess
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Culligan US-EZ-4 Level 4 Easy-Change Undersink Filter System is an easy to install undersink water filter system with twist on / twist off mechanism. Comes with one lead-free faucet. Compatible with US-EZ-4 RC-EZ-1 RC-EZ-3 RC-EZ-4.
Package Qty1
Used In BrandsCulligan
Manufacturer's IdUS-EZ-4
Actual Size (in)8 3/4 inches (length) x 3 3/4 inches (width) x 14 inches (height)
Actual Size (cm)22.23 x 9.525 x 35.56
Filter Life (gallons)500
Filter Life (liters)1,892.71
Filter Life (months)6 months
Micron Rating (Nominal)0.5
Operating Pressure (psi)30 - 100
Operating Temperature (°F)40 - 100
Operating Temperature (°C)4.4 - 37.8
Flow Rate (gpm)0.5
Flow Rate (lpm)1.893
Fitting Size (inches)1/4 inch
CertificationsNSF/ANSI Standard 42, NSF/ANSI Standard 53
Warranty Guarantee2 year limited warranty
IncludesOne RC-EZ-4 Level 4 filter cartridge, Filter head with built-in bracket, Mounting screws, Water supply adapter, Lead-free faucet and fittings, 1/4 inch plastic tubing, Cartridge change reminder sticker, Installation and Operating Instructions

Reduced Contaminants

The CULLIGAN-US-EZ-4 reduces the following contaminants:

  • Bad Taste and Odor
  • Chloramines
  • Chlorine Taste & Odor 98.00%
  • Cysts 99.99%
  • Lead 99.30%
  • Mercury at pH 6.5 96.70%
  • Mercury at pH 8.5 96.60%
  • Methyl tertiary butyl ether (MTBE) 96.90%
  • Particulates (Class I) 99.90%
  • Sediment
  • Turbidity 98.00%
  • VOCs 99.80%

The CULLIGAN-US-EZ-4 is comparable with the following part numbers

4294138 RC-EZ-1
US-EZ-4 1019054

Installation Guide


  1. The battery is installed behind the faucet. There is a lip there with a battery insert. Putting the battery there powers the indicator light on the faucet

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