Tier1 US-ST04 Under Counter Smart Tap System

Price $59.99
Availability: In stock
  • Tested against NSF 42, NSF 53, and NSF 401
  • Reduces Chlorine taste and odor, Lead, Mercury, and more!
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The Tier1 US-ST04 undersink system is the perfect addition to your kitchen sink. The easy-to-install system simply hooks up to your cold water line with a water supply adapter (included) and you will be drinking clean, great-tasting water right from your kitchen tap! Don't waste any more money on bottled water, Tier1 offers all the filtration you need with the Tier1 US-ST04 Undersink System. Order today!
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 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
Primary Filter Media Carbon Block

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



  1. Turn off cold water shut-off valve then turn on the kitchen faucet and allow water to drain from line.
  2. Disconnect the cold water line from the cold water shut-off valve
  3. Connect the water supply adapter to the cold water shut-off valve, as shown.

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