Pentek ECP20-BB Pleated Sediment Water Filter (9-3/4-inch x 4-1/2-inch)

Price $18.99
Availability: BackOrder
Fits most stand housings built for 10-inch x 4.5 inch filter cartridges
Choose a quantity
  • 1 Filter $18.99  
  • 3 Filters Price $17.87 each
  • 6 Filters Price $17.09 each
  • Filters contaminants down to 20 microns in size
  • Pleated media for maximum contaminant retention
  • Supports a flow rate of up to 20 gallons per minute (gpm)
  • Drop-in cartridge design makes filter changes fast and easy
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Pentek ECP20-BB Filter Advantages

The Pentek ECP20-BB water filter cartridge has a special formulation of resin-impregnated cellulose and polyester fibers. The Pentek ECP20-BB water filter provides higher wet strength than regular cellulose cartridges. The ECP20-BB water filter also provides high flow rates and dirt-holding capacity, while maintaining extremely low pressure drop. The Pentek ECP20-BB replacement filter cartridge has minimal unloading and media migration. The Pentek ECP20-BB water filter media is pleated around a polypropylene core for added strength and the ends are immersed in a thermosetting vinyl plastisol. Embedding and sealing each end of the pleat block in this fashion fuses the components together, forming a unitized end cap and gasket. The ECP water filter cartridges contain more media surface area than most competitive cartridges. The 10-inch Big Blue ECP cartridges contain 18 square feet of media.

Pleated Filter Media

The Pentek ECP20-BB uses pleated filter design to maximize contaminant exposure to filter media. More time along the media allows for higher capture and retention of unwanted contaminants. This also allows for greater amounts of larger particles such as sediment and sand to collect within the pleats of the filter. This pleated design enhances structural stability and helps increase the performance of the filter.

Universal Filter Sizing

The 10 X 4.5 Pentek ECP20-BB pleated cellulose and polyester replacement filter is built to fit 10-inch x 4.5-inch filter housings. This standard sizing allows this filter to easily replace existing styles of whole house filters for housings requiring 10 x 4.5 inch filters. The ECP20-BB goes to work immediately providing cleaner, fresher water for up to six months. Enjoy cleaner better water with your whole house replacement filter today.

The Pentek ECP Series cartridges have end caps that are color-coded for micron rating:
Tan = 1 micron
White = 5 micron
Blue = 20 micron
Yellow = 50 micron

NOTE: The Pentek ECP20-BB replacement filter cartridge is recommended for chlorinated water supplies. It is not recommended for non-chlorinated water supplies. Cellulose may start to break down if there is bacteria present in well water or other non-chlorinated water supplies.

NOTE: Do not use with water that is microbiologically unsafe or of unknown quality without adequate disinfection before or after the system.

For more information please see the related tabs and read the Pentek ECP20-BB User Guide

Package Qty 1
Used In Brands Ametek, Culligan, Pentek, US Filter
Manufacturer's Id ECP20-BB
UPC 051678491430
Advertised Size (in) 10 x 4-1/2
Actual Size (in) 9 3/4 inches (length) x 4 1/2 inches (outside diameter)
Actual Size (cm) 24.77 x 11.43
Media Pleated Cellulose Polyester
Primary Filter Media Pleated Cellulose Polyester
Filter Life (months) 6 months
Micron Rating (Nominal) 20
Operating Temperature (°F) 40 - 125
Operating Temperature (°C) 4.4 - 51.7
Flow Rate (gpm) 20
Flow Rate (lpm) 75.708
Color White
Materials of Construction Core: Polypropylene, End Caps: Vinyl Plastisol
Warranty Guarantee Manufacturer 30 Day Limited Warranty
Includes One 9-3/4 x 4-1/2 Inch Pentek ECP20-BB Pleated Sediment Water Filter
Primary Filter Media Pleated Cellulose Polyester

Reduced Contaminants

The PENTEK-ECP20-BB reduces the following contaminants:

  • Dirt
  • Fine Sand
  • Hard Scale
  • Rust and Corrosion
  • Sand
  • Sediment

The PENTEK-ECP20-BB 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.

Reset Instructions