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10 X 2.5 String Wound Polypropylene Replacement Filter by Tier1 (30 micron)

Price $7.99 List Price Price $10.99 Save 27%
Availability: In Stock
Choose a quantity
  • 1Filter$7.99 
  • 3Filters Price $7.52 each
  • 6Filters Price $7.19 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
  • String-Wound Polypropylene filter media
  • Brings you cleaner water along with an easy installation
  • 30 day 100% satisfaction guarantee
  • Fits many standard 10 inch by 2.5 inch housings
› See more product details
  • String-Wound Polypropylene filter media
  • Brings you cleaner water along with an easy installation
  • 30 day 100% satisfaction guarantee
  • Fits many standard 10 inch by 2.5 inch housings
The Pentek CW-MF comparable water filter by Tier1 is a 10 x 2.5-inch whole house sediment water filter for whole house applications that require the reduction of rust, scale, silt, sand and dirt. The String-Wound Polypropylene filter media reduces particles down to 30 microns, providing cleaner, fresher and better tasting drinking water for your home. Order today!
Package Qty1
Used In Brands3M, Ace, American Plumber, Ametek, Aqua-Pure, Culligan, GE, Hydronix, Keystone, Liquatec, Pentek, Tier1, Watts
Manufacturer's IdCW30-934
Advertised Size (in)10 x 2-1/2
Actual Size (in)9 3/4 inches (length) x 2 1/2 inches (outside diameter)
Actual Size (cm)24.765 x 6.35
Outside Diameter (inches)2.5
MediaString Wound Polypropylene
Primary Filter MediaPolypropylene
Filter Life (gallons)16,000
Filter Life (liters)60,566.6
Filter Life (months)6 months
Micron Rating (Nominal)30
Operating Temperature (°F)40 - 165
Operating Temperature (°C)4.4 - 73.9
Flow Rate (gpm)10
Flow Rate (lpm)37.854
Country of ManufactureChina
Warranty GuaranteeUnconditional Product Guarantee for Life of the Product

Reduced Contaminants

The TIER1-CW30-934 reduces the following contaminants:

  • Dirt
  • Hard Scale
  • Limescale
  • Oxidized Iron
  • Particles
  • Sand
  • Silt

The TIER1-CW30-934 is comparable with the following part numbers

34360 155187-43 155187-52 Ace Hardware 48237
American Plumber W30W Ametek Kleen-Plus C1 Culligan CW-MF Culligan D-10
CW-MF Do It Best 487155 Keystone W30 Master Plumber 583-401
OB1 OB5 Omni Regular Pentek CW-MF
RS3DS RS3-DS RS3-DS12-01 RS3-DS12-02
RS3-DS12-06 RS3-SS RS3-SS24-05 Teledyne Pik IR-25
True Value 583-401 U24 U25 U26
W30W W34-PR WC34-PR WVC34

The TIER1-CW30-934 fits the following model numbers

AP101 AP101S AP101-S AP101T
AP101-T AP102 AP102S AP102-S
AP102T AP102-T AP11 AP110
AP-110 AP11S AP11-S AP11T
AP11-T AP12 AP12S AP12-S
AP12T AP12-T AP1610 AP1610SS
AP1610-SS AP2610 AP2610SS AP2610-SS
AP51T AP51-T K00173 Purtrex 93023
PX05-9-7-8 PX-5-978 SS1 SS10
SS11 SS12 SS2 SS3


  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