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10 x 2.5 Inch Universal Carbon Block Under Sink Filter (0.5 Micron)

Price $15.99 List Price Price $22.99 Save 30%
Availability: In Stock
Choose a quantity
  • 1Filter$15.99 
  • 3Filters Price $15.04 each
  • 6Filters Price $14.39 each
Available Add-Ons

SKU: TIER1-OR-LUBRICANT-SM › See more product details

O-Ring Silicone Grease (0.2 oz Packet)

Add: $6.99 $4.99

SKU: TIER1-OR-34 › See more product details

American Plumber, Culligan, Pentek OR-34 O-Ring

Add: $9.99 $6.99
  • Ships fast!
  • Reduces particles down to 0.5 microns in size
  • Both cost effective and great quality
› See more product details
  • Ships fast!
  • Reduces particles down to 0.5 microns in size
  • Both cost effective and great quality
The Omnifilter CB3 Comparable Carbon Block Whole House Water Filter by Tier1, can reduce contaminates as small as 0.5 microns. If you have issues with chlorine taste and odor as well as sediment the TIER1-US-D30 is the perfect cost effective replacement. It takes just a moment to install, simply place in your housing and tighten the cap and your good to go. Be sure to order your carbon block filter today!
Package Qty1
Used In BrandsCulligan, GE, Pentek, ReplacementBrand, Tier1
Manufacturer's IdUS-D30
Advertised Size (in)10 x 2-1/2
Actual Size (in)9 3/4 inches (length) x 2-5/8 inches (diameter)
MediaRadial Flow Activated Carbon Block
Filter Life (gallons)600
Filter Life (liters)2,271.25
Filter Life (months)6 months
Micron Rating (Nominal)0⋅5
Flow Rate (gpm)1
Warranty GuaranteeUnconditional Guarantee for Life of the Product

Reduced Contaminants

The TIER1-US-D30 reduces the following contaminants:

  • Chlorine Taste & Odor
  • Sand
  • Sediment
  • Silt
  • Soil

The TIER1-US-D30 is comparable with the following part numbers


The TIER1-US-D30 fits the following model numbers



  1. Turn off water supply. Press red pressure-relief button (if present)
  2. Unscrew housing. Remove large o-ring, wipe clean and set aside
  3. Discard used filter cartridge. Wash housing with dish soap and warm water using a nonabrasive sponge or cloth. Rinse thoroughly
  4. Fill 1/3 with water. Add about 1 tablespoon of bleach and scrub to disinfect. Rinse thoroughly
  5. Lubricate o-ring with clean silicone grease. Change o-ring if any damage cuts or degradation are present. Insert o-ring in groove
  6. NOTE: This step is important to ensure a proper housing seal. Make certain the o-ring is seated level in the groove
  7. Insert new filter cartridge
  8. Screw housing onto the cap and hand-tighten. Do not over tighten. Make sure cap standpipe slips into cartridge
  9. Turn on water supply. Press pressure-relief button (if present). Check for leaks before leaving installation