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US-ST04 Tier1 Undersink Smart Tap System

US-ST04 Tier1 Undersink Smart Tap System

Save 38% (MSRP: $95.99)
5 3


The Tier1 US-ST04 undersink system is the perfect addition to your kitchen sink, filtering over 50 contaminants potentially in your water. This easy-to-install system will give you clean, fresh, great-tasting water in no time at all! Simply mount the bracket and filter under your kitchen sink cabinet, hook it up to your cold water line with the water supply adapter (included), and away you go! The system has been tested against NSF standards 42, 53, and 401 for reduction of substances such as bad Chlorine taste and odor, Turbidity, Mercury, Lead, some pharmaceuticals, and more! There's no need to waste money and space on countertop systems and bottled water, Tier1 offers all the filtration you need with the Tier1 US-ST04 Undersink System. Order today!

  • Reduces Chlorine Taste and Odor, Lead, Mercury, and more!
  • Easy installation!
  • Over 650 gallon filter capacity
  • Sleek, space-saving design


Package Qty 1
Manufacturer's Id US-ST04
UPC 641945746853
Actual Size (in) 19.25 inches (length) x 4.125 inches (width) x 4.5 inches (depth)
Actual Size (cm) 50 centimeters (length) x 10.5 centimeters (width) x 11.5 centimeters (depth)
Primary Filter Media Carbon Block
Filter Life (gallons) 651
Filter Life (liters) 2464
Micron Rating (Nominal) 1
Operating Pressure (psi) 40 - 120
Operating Temperature (°F) 33 - 100
Operating Temperature (°C) 4.4 - 37.8
Flow Rate (gpm) 1.25
Flow Rate (lpm) 4.73
Fitting Size (inches) 3/8 inch
Color / Finish Gray
Chlorine Tolerance 95.5%
Certifications NSF/ANSI Standard 42, NSF/ANSI Standard 53, NSF/ANSI Standard 401
Includes System head with attachable bracket, smart tap filter, water supply adapter, mounting screws, 3/8 inch plastic tubing

The TIER1-US-ST04 is comparable with the following part numbers