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Pentair Pentek DGD-5005-20 Big Blue Water Filter, 20-Inch Whole House Sediment Filter Cartridge Replacement, Dual-Gradient Density Spun Polypropylene, 20" x 4.5", 5 Micron, Pack of 1, White

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Availability: In Stock.
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Arrives Friday, Oct 23
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Size: Pack of 1


Style: 5 micron


Features

  • KEEP YOUR WATER CLEANER - Reduces dirt, sand, silt, rust and other sediment to help protect your appliances, plumbing and downstream filters. Made from 100% pure polypropylene, it will not impart taste, odor or color to your water.
  • IDEAL HIGH-FLOW PRE-FILTER - Dual-gradient density construction increases filter density from the outer surface to the core, delivering up to 3X the dirt-holding capacity of similar-size sediment cartridges and 233% greater effective filter depth.
  • TESTED AND CERTIFIED TO NSF/ANSI 42 - Independently tested and certified by NSF International to NSF/ANSI Standard 42 for material requirements. Manufactured from 100% pure polypropylene for purity and broad chemical compatibility.
  • FITS ALL 20-INCH BIG BLUE HOUSINGS - Drops into any 20" Big Blue or other heavy-duty housing and replaces any 20" x 4.5" sediment cartridge, with a low pressure drop under 1 psi at 20 gpm for strong whole-house flow.
  • REPLACE EVERY 6 MONTHS - Change the cartridge about every six months, or sooner when you notice a drop in water pressure or water quality. Nominal 5 micron rating suits residential, rural, municipal and commercial water.

Description

The Pentair Pentek DGD-5005-20 is a 20-inch dual-gradient density sediment cartridge for whole-house, point-of-entry filtration. Spun from 100% pure polypropylene, it reduces dirt, sand, silt and rust, adds no taste, odor or color to your water, and offers broad chemical compatibility.Its dual-gradient design packs the fibers more tightly from the outer surface toward the core, raising effective filter depth to a full 233% and delivering up to three times the dirt-holding capacity of similar-size cartridges, with a low pressure drop under 1 psi at 20 gpm.Measuring 20" x 4.5", it fits all 20-inch Big Blue and other heavy-duty housings and replaces any 20" x 4.5" sediment cartridge. It carries a nominal 5 micron rating, handles temperatures to 145°F, and is tested and certified by NSF International to NSF/ANSI Standard 42 for material requirements. Replace about every 6 months, or sooner when you notice reduced flow or water quality.

Material: Polypropylene (PP)


Product Dimensions: 4.5"D x 4.5"W x 20"H


Item Weight: 1.8 pounds


External Testing Certification: ANSI, NSF


Product Benefits: Dual-Gradient Sediment Filter Cartridge is designed to reduce fine sediment in residential drinking wate See more


Model Number: DGD-5005-20


Product Benefits: Dual-Gradient Sediment Filter Cartridge is designed to reduce fine sediment in residential drinking wate


Brand Name: Pentek


Set Name: Big Blue


UPC: 051678358436 643749296329


Global Trade Identification Number: 36


Unit Count: 1 Count


Number of Items: 1


Included Components: Sediment Water Filter


Item Type Name: Big Blue Sediment Water Filter, 20-Inch, Whole House Heavy Duty Dual-Gradient Density Spun Polypropylene Replacement Filter Cartridge, 20" x 4.5", 5 Micron


Manufacturer: Pentair Industries


Manufacturer Part Number: 155358-43


Material Type: Polypropylene (PP)


Item Dimensions D x W x H: 4.5"D x 4.5"W x 20"H


Item Weight: 1.8 pounds


External Testing Certification: ANSI, NSF


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Oct 23

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Pentair Pentek DGD-5005-20 Big Blue Water Filter, 20-Inch Whole House Sediment Filter
Size: Pack of 1 Style: 5 micron
Been using the Pentek DGD-5005-20 in my Big Blue housing for a few years now and it's doing exactly what I need. The dual-gradient density design does a great job catching sediment progressively — coarser stuff up front, finer particles as water moves through — so it doesn't clog as fast as the cheaper single-layer filters I tried before. Water pressure has stayed strong. Fit was perfect in my standard 20-inch Big Blue housing, no issues there. Installation was straightforward, and it seems well-built for the price. I'm planning to just keep a few spares on hand for swaps every few months depending on usage. Great value if you're dealing with sediment, rust flecks, or dirt in your water supply. Would recommend to anyone with a whole-house filtration setup ... show more
Reviewed in the United States on August 15, 2026 by Extreme DIY

  • Work as expected.
Size: Pack of 2 Style: 5 micron
These work well for me. Seems to remove a lot of the soluble iron. These are made in China and for a simple dual gradient wound cartridge I am ok with it. For my carbon block I buy the Pentek series made in Dover, NH, USA and the price of those is reflected accordingly.
Reviewed in the United States on July 5, 2026 by Kathleen Cheatham

  • Always consistent
Size: Pack of 1 Style: 5 micron
Great product. Received quickly
Reviewed in the United States on August 2, 2026 by Liz D

  • Nice filter
Size: Pack of 1 Style: 5 micron
Had this filter in my system for five months. It performed perfectly and filtered out a lot of containments
Reviewed in the United States on June 23, 2024 by Happy but Thrifty Papa

  • Appears to have made a difference
Size: Pack of 1 Style: 5 micron
Maybe coincidence but I’m writing because it may help someone, I sure didn’t know how to deal with it. We have a rain catchment system here in New Mexico that feeds the house supplementing public water. We also had what we used to call a 100 year storm (probably becoming normal now) that flooded everything. We presume it overran the tank with groundwater First I filled the dog’s bowl and it was brownish and the toilet also was filling with sediment so I changed the overdue filters. What happened next was the strangest thing I’ve seen and no one I’ve found can explain it. Perhaps a chemist reading here might explain. The water came out of the tap looking exactly like dishwater, soapy as if full of detergent. It poured into a pitcher with a head on it that you could scoop out by hand (photo). Eventually it came out looking more like milk. I let some sit for a couple of days (glass in background) thinking it must be air bubbles, but after two days it had indeed settled a bit but remained a foggy gray. No odor or anything but it looked weird. We had a 25 micron paper filter ahed of the carbon 10 micron filter and started wondering if the paper filter was adequate. I shut off the rain water until this new filter arrived. It may be coincidence or time, all I know is that since I swapped in this filter and turned the rain water back on the water has been clear. I was concerned about flow dropping from a 25 to a 5 micron filter but there’s been no perceptible change. FYI ... show more
Reviewed in the United States on September 3, 2025 by Mary & Lou

  • Looks different than OEM but works great
Size: Pack of 2 Style: 5 micron
Just know they look a little different than the original/oem. Initially they look a little taller, but they don't have the plastic end cap and black rubber seal. So overall length is actually the same. Fits perfectly. Working well so far.
Reviewed in the United States on May 16, 2026 by Jon P.

  • Pentair for the win
Size: Pack of 1 Style: 5 micron
Work as intended, have bought before and will continue to. Never had issues with them on a water well filtration set up.
Reviewed in the United States on May 21, 2026 by BG

  • Works as expected
Size: Pack of 1 Style: 5 micron
I forgot to replace my filter for a year and well I needed a replacement. This looked exactly like the filter I used for last time so I bought it. Installed it and it working as expected. No problems as Its the correct size. Will buy again in 6 months. This time not forgetting to replace it for a year. Changing a water filter sucks when you have no water to clean the housing. Lesson Learned and will have a bucket of water for cleaning. Also not replacing during a freezing winter can help also. ... show more
Reviewed in the United States on January 31, 2026 by DeadRisingStar

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