C1-20 Pentek Replacement Filter Cartridge

Price $18.99
Availability: In stock
Fits most housings that accept 20-inch x 2.5-inch water filter cartridges
Choose a quantity
  • 1 Filter $18.99  
  • 6 Filters Price $13.67 each
  • A great 'combination' filter with 5 micron dual-purpose Powdered-Activated Carbon
  • Effective chlorine reduction, to eliminate harsh taste and odor
  • Great for residential drinking water applications
  • Well-suited for treated 'city water' (recommended for chlorinated water supplies)
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The Pentek C1-20 Carbon Water Filter provides sediment filtration, plus unpleasant taste & odor reduction--all in one convenient cartridge. The C1-20 filter cartridges have high dirt-holding capacity. They offer an economical solution for all of your general purpose water filtration needs. Constructed of a carbon impregnated cellulose media, these dual-purpose cartridges filter out fine particles, as well as unwanted taste and odor from your tap water.
Package Qty 1
Used In Brands Ametek, Culligan, Pentek, US Filter
Manufacturer's Id C1-20
UPC 051678597439
Advertised Size (in) 20 x 2-1/2
Actual Size (in) 20 inches (Length) x 2-1/2 inches (Width) x 2-1/2 inches (Depth)
Actual Size (cm) 50.8 x 6.35 x 6.35
Media Carbon Impregnated Pleated Cellulose
Primary Filter Media Carbon Wrapped
Filter Life (gallons) 5,000
Filter Life (liters) 18,927.05
Filter Life (months) 6 months
Micron Rating (Nominal) 5
Operating Temperature (°F) 40 - 125
Operating Temperature (°C) 4.4 - 51.7
Flow Rate (gpm) 5
Flow Rate (lpm) 18.927
Color Black
Materials of Construction Filter Core: Polypropylene, Netting: Polyethylene, Reinforcement Backing: Cellulose Polyester, End Caps: Vinyl Plastisol
Includes One 20 x 201/2 Inch Pentek C1-20 Carbon Water Filter
Primary Filter Media PAC-impregnated Cellulose

The PENTEK-C1-20 is comparable with the following part numbers


User Guide


  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.

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