Unicel C-8411 75 sq ft pool filter cartridge elementUnicel C-8411 75 sq ft Replacement Filter Cartridge In stock$8199
Unicel C-8411 75 sq ft pool filter cartridge element
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Unicel C-8411 75 sq ft Replacement Filter Cartridge

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$8199
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Quick overview

  • 75 square feet A 75 sq ft cartridge element, sized to the filters it is listed for.
  • Short and wide 8-15/16 inches in outside diameter by 17-3/8 inches long, a squatter element than the tall cartridges.
  • Three filter brands Unicel lists this element against Hayward®, Pentair and Waterway filters.
  • Measure before you order Cartridges of the same square footage come in different shapes, so the diameter and the length are what decide the fit.
  • Genuine Unicel The Unicel C-8411 element, not an unbranded copy of it.
  • Restores flow Filter pressure climbing and returns going soft is usually the cartridge, not the pump.
Full description and specifications ↓

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Product details

The Unicel C-8411 is a 75 square foot replacement cartridge element. It measures 8-15/16 inches in outside diameter and 17-3/8 inches long, which makes it one of the shorter, wider cartridges rather than a tall slim one.

Getting the fit right

Square footage on its own does not decide whether a cartridge fits. Two 75 sq ft elements can be completely different shapes, so measure the old cartridge and match the outside diameter and the length before ordering. Unicel lists this element against Hayward®, Pentair and Waterway filters.

When to replace rather than clean

A cartridge is finished when a proper soak stops bringing the filter pressure back down, or when the pleats have flattened, split or gone permanently gray. At that point the media is loaded past recovery, and no amount of hosing restores the flow.

Specifications
Brand Unicel
Manufacturer part number C-8411
UPC 678285180191
Square footage 75 sq ft
Outside diameter 8-15/16"
Length 17-3/8"
Filter manufacturer Hayward®, Pentair, Waterway
Shipping weight 5.62 lb
Ships Parcel

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Customer reviews

Questions and answers

What people ask about this product, answered by our pool techs.

How do I check this is the right cartridge?
Pull the old element and measure it. This one is 8-15/16 inches across and 17-3/8 inches long at 75 square feet. All three numbers need to match.
Which brands of filter does it fit?
Unicel lists it for Hayward®, Pentair and Waterway filters.
How often should a cartridge be replaced?
Clean it on schedule and replace it when a proper soak no longer brings the pressure back down, or when the pleats are flattened, torn or permanently discolored.
Can I run the filter without the cartridge for a while?
No. Without the element there is nothing filtering, and debris goes straight through the tank and back into the pool.
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