Four Aqua-Pure AP811 Replacement Water Filter Cartridges with O-rings

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KleenWater Aqua-Pure AP811, AP801 Compatible Filters, AP811 Alternative Replacement Water Filter Cartridges, 4 1/2 X 9 7/8 Inch, 25 Micron, 4-Pack with 4 AP801 Compatible O-Rings


  • Four KleenWater brand compatible replacement filters for 3M Cuno Aqua-Pure AP810
  • 25 micron whole house water filter with dirt sediment and rust filtration
  • KleenWater brand dirt sediment water filter with raised groove polypropylene construction
  • Green Plastic end caps with gaskets ensure positive seal
  • 4 O-Rings compatible with Aqua-Pure water filter AP801

This package includes (4) KleenWater Filters compatible with 3M Cuno Aqua-Pure AP811 which install in the AP801 filtration system.  Also are included (4) KWRG801 water filter o rings.


This KleenWater brand water filter replacement cartridge is a high quality, low cost alternative to the original manufacturer AP811. The rigid polypropylene construction effectively removes dirt and sediment with impressive flow rates of up to 20 gallons per minute. Each cartridge contains two distinct micron layers. Larger particles are trapped near the exterior and progressively finer particles towards the filter core. Thus the cartridge has exceptional solids-holding capacity and will perform longer. The KleenWater KW811 features green plastic end caps with gaskets and a raised ridge grooved design which provides a significant increase in surface area.The green end cap designates the filter micron rating of 25. This replacement cartridge is an ideal choice for the value conscious consumer. The cartridge should be changed every 6 – 12 months or upon noticeable pressure reduction. 25 Micron gradient density melt blown polypropylene construction. To provide perspective to the 25 micron sediment entrapment rating it is important to note the naked human eye can see down to 30 micron and a human hair is 100 microns in diameter.

Also included are 4 RGAP801-AP802 water filter o-rings. These are made of NSF approved Nitrile rubber also known as Buna-N. It is important to change your o-ring at regular intervals to ensure a reliable water tight seal between the filter head and filter sump. It is recommended to keep a spare o-ring to avoid an urgent situation.

  • Model: KW811-Qty4-RGAP801-Qty4

  • Model: KW811-Qty4-RGAP801-Qty4

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