Dual-Layer Gradient-Density Catridges

Dual-layer design has a holding capacity of two to three times traditional cartridges
Dual-layer cartridges are high-capacity cartridges that combine a prefiltration layer with a selective postfiltration layer. Each layer is a separate gradient-density filter, which reduces larger particles on the outer layers and finer particles on the inner layers. Ideal for removing a broad range of deformable and nondeformable particles such as sand, silt, sludge, rust and scale.

This design has a holding capacity that is two to three times traditional spun or wound designs. Catridges are made of bacteria and chemical-resistant polypropylene; suitable to 145°> F (63°>C). These cartridges are certified to NSF Standard 42 for materials.
$17.75 - $41.50USD / Each

6 variations of this product are available.

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Filter Length (in) Micron Rating
Availability Pricing
Pentair 155360-43 20" dual-gradient density polypropylene cartridge, 25 µm prefilter, 1 µm EW-29802-20 Mfr # 155360-43
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20 1
$41.50USD / Each
Pentair 155358-43 20" dual-gradient density polypropylene cartridge, 50 µm prefilter, 5 µm EW-29802-21 Mfr # 155358-43
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20 5
$35.50USD / Each
Pentair 155356-43 20" dual-gradient density polypropylene cartridge, 75 µm prefilter, 25 µm
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EW-29802-22 Mfr # 155356-43
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20 75
$39.00USD / Each
Pentair 155359-43 10" dual-gradient density polypropylene cartridge, 25 µm prefilter, 1 µm EW-29802-23 Mfr # 155359-43
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10 25
$18.75USD / Each
Pentair C155357-43 10" dual-gradient density polypropylene cartridge, 50 µm prefilter, 5 µm EW-29802-24 Mfr # C155357-43
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10 5
$17.75USD / Each
Pentair 155355-43 10" dual-gradient density polypropylene cartridge, 75 µm prefilter, 25 µm EW-29802-25 Mfr # 155355-43
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10 25
$18.50USD / Each
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