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20 X 4.5 Spun Wound Polypropylene Replacement Filter by Tier1 (5 micron)

Price $23.99 List Price Price $33.99 Save 29%
Availability: BackOrder
Fits most stand housings built for 20-inch x 4.5 inch filter cartridges
Choose a quantity
  • 1Filter$23.99 
  • 3Filters Price $22.57 each
  • 6Filters Price $21.59 each
Available Add-Ons

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

Dow Corning Molykote 111 O-Ring Silicone Lubricant (5.3 oz. Tube)

Add: $39.99 $27.99

SKU: TIER1-OR-100 › See more product details

American Plumber, Culligan, Pentek OR-100 O-Ring for Big Blue Housings

Add: $9.99 $6.99
  • Ships fast
  • Provides cleaner, fresher tasting water
  • Reduces contaminants down to 5 microns
  • Tier1 water filters are big on performance, not on price
› See more product details
  • Ships fast
  • Provides cleaner, fresher tasting water
  • Reduces contaminants down to 5 microns
  • Tier1 water filters are big on performance, not on price

Tier1 P5-20BB Filter Advantages

The Pentek DGD-5005-20 comparable whole house sediment water filter by Tier1 is ideal for applications requiring filtration down to 5 microns. The P5-20BB installs quickly and easily, making filter changes a breeze. Polypropylene construction means this filter inhibits bacterial growth and allows the Tier1 P5-20BB to be an ideal solution for both municipal and well water sources. Capable of reducing contaminants such as dirt, sediment, sand, silt, and rust and corrosion you can count on this filter providing cleaner water throughout your home and in every glass of water.

Sizing Requirements

20 X 4.5 spun wound polypropylene replacement filter by Tier1 is built to fit 20-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 20 x 4.5 inch filters. The P5-20BB goes to work immediately providing cleaner, fresher and better tasting water for up to six months. Enjoy cleaner better tasting water with your whole house replacement filter today.

Package Qty1
Used In BrandsPentek, Tier1
Manufacturer's IdP5-20BB
Advertised Size (in)20 x 4-1/2
Actual Size (in)20 inches (length) x 4 1/4 inches (outside diameter)
Actual Size (cm)50.8 x 10.795
Outside Diameter (inches)4.25
MediaSpun Wound Polypropylene
Primary Filter MediaPolypropylene
Filter Life (months)6 months
Micron Rating (Nominal)5
Operating Temperature (°F)40 - 145
Operating Temperature (°C)4.4 - 62.8
Flow Rate (gpm)20
Flow Rate (lpm)75.7082
Warranty GuaranteeUnconditional Product Guarantee for Life of the Product
IncludesOne Tier1 20 x 4.375 inch Spun Wound Polypropylene Replacement Filter
Primary Filter MediaPolypropylene

Reduced Contaminants

The TIER1-P5-20BB reduces the following contaminants:

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

The TIER1-P5-20BB is comparable with the following part numbers

155358-43 C155358-43
DGD-5005-20 FPMB-BB5-20
Hydronix SDC-45-2005 P50-20BB
P5-20BB PENTEK-DGD-5005-20
SDC-45-2005 SDF-45-2005

The TIER1-P5-20BB fits the following model numbers

All 20 x 4.5 inch Big Blue filter housings


  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