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Pentair Sta-Rite Posi-Flo II Replacement Cartridge - 137 Sq Ft (PSR137)

Marsoni M251S
Sale price$122.10
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Pentair Sta-Rite Posi-Flo II Replacement Cartridge - 137 Sq Ft (PSR137)Replacement filter cartridge for Pentair Sta Rite Posi Flo II swimming pool filter systems. Compatible Filter Systems Pentair Sta Rite Posi Flo II (PTM135) Specifications Type Filter Cartridge Filtration Area 137 sq ft Outside Top (OT) 4 3 16" Outside Bottom (OB) 4 3 16" Diameter 8 11 16" Length 31 1 4" Media Weight 4 oz MPN PSR137 Brand Compatibility Pentair Sta Rite Cross References 23701, 46174, 4900 209, 645544025708, AK 8022, FC 2570, PC 2570,
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4.1 ★★★★★
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GRohloff
Bozeman, US
★★★★★ 4
Keeps her busy!
Color: Medium size (5.9")
Our Molly loves this. Only thing is that it is a little too big for our Maltipoo, but she still tries to keep up with it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026
A
Verified Purchase
Amazon Customer
Natrona Heights, US
★★★★★ 5
Tough
Color: Medium size (5.9")
So far my dog hasn’t destroyed it! And it’s been a month. So I call that a win. Plus he loves it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
J
Verified Purchase
Jackey Leigh
Lexington, US
★★★★★ 5
Keep scrolling
Color: Medium size (ø 5.5")
The toy is best for "non aggressive " chewers. The seller is fantastic though!! They resolved an issue proactively, without being asked-something you don't see often. That level of integrity sets them apart, and I would absolutely buy from them again.
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Reviewed in the United States on December 19, 2025
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Verified Purchase
Lana Todd
Belleville, US
★★★★★ 1
Do not waste your money
Color: Large size (ø 7.4")
Not for aggressive dogs. I thought this was good for the money it’s not. My dog chewed this up in less than a minute. Not too happy
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Reviewed in the United States on December 24, 2025
J
Verified Purchase
J.K.
West Palm Beach, US
★★★★★ 5
Dog loves it
Great durability and unpredictability. Dog loves it and we love it. It’ll last a long time.
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Reviewed in the United States on October 29, 2023

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