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Pentek ECP5-BB Pleated Sediment Water Filter (9-3/4-inch x 4-1/2-inch)

Price $32.99 List Price Price $46.99 Save 29%
Availability: In Stock
Fits most stand housings built for 10-inch x 4.5 inch filter cartridges
  • Ships fast!
  • Reduces contaminants down to 5 microns in size
  • Pleated media for maximum contaminant retention
  • Provides great tasting water directly from your faucet
› See more product details
Save $5.00 with a Tier1 Brand
Comparable Filter
View Filter Value Comparison
  • Ships fast!
  • Reduces contaminants down to 5 microns in size
  • Pleated media for maximum contaminant retention
  • Provides great tasting water directly from your faucet
Save $5.00 with a Tier1 Brand
Comparable Filter
View Filter Value Comparison

Pentek ECP5-BB Filter Advantages

The Pentek ECP5-BB water filter cartridge has a special formulation of resin-impregnated cellulose and polyester fibers. The Pentek ECP5-BB water filters provide higher wet strength than regular cellulose cartridges. This water filter also provides high flow rates and dirt-holding capacity, while maintaining extremely low pressure drop. The Pentek ECP5-BB replacement filter cartridge has minimal unloading and media migration. The Pentek ECP5-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 united 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. Nominal 5 micron Pentek ECP5-BB pleated cellulose polyester water filter cartridge.

Pleated Filter Media

The Pentek ECP5-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 of 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 ECP5-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 ECP5-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: Do not use with water that is microbiologically unsafe or of unknown quality without adequate disinfection before or after the system.

NOTE: The Pentek ECP5-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.

For more information please see the related tabs and read the Pentek ECP5-BB User Guide

Package Qty1
Used In BrandsCuno, Filterite, Harmsco, Keystone, Pentek, U.S. Water, US Filter
Manufacturer's IdECP5-BB
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
Outside Diameter (inches)4.5
MediaPleated Cellulose/Polyester
Primary Filter MediaPleated Cellulose
Filter Life (months)6 months
Micron Rating (Nominal)5
Operating Temperature (°F)40 - 125
Operating Temperature (°C)4.4 - 51.7
Flow Rate (gpm)20
Flow Rate (lpm)75.708
Country of ManufactureMexico
Materials of ConstructionCore: Polypropylene, End Caps: Vinyl Plastisol
Warranty GuaranteeManufacturer 30 Day Limited Warranty
IncludesOne 9.75 x 4.5 Inch Pentek ECP5-BB Pleated Sediment Water Filter
Additional InformationEnd Cap Color: White
Primary Filter MediaPleated Cellulose Polyester

Reduced Contaminants

The PENTEK-ECP5-BB reduces the following contaminants:

  • Dirt
  • Particles
  • Rust and Corrosion
  • Sand
  • Sediment
  • Silt

The PENTEK-ECP5-BB is comparable with the following part numbers

155184 4021341 155184-27 255490-43
RS15 RS15-2-01 RS15-2-02 RS15-2-05
SPC-45-1005 SPF-45-1005 W5CPHD WB-HB-10-5W

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.