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Spa Filter Baleen: AK-8022, OEM: WC108-70S2x, Pleatco: PSR137-4 , Unicel: UHD-SR137 , Filbur: FC-2570, Diameter: 8-11/16", Length: 31-1/4"

  • Spa Filter Baleen: AK-8022, OEM: WC108-70S2x, Pleatco: PSR137-4, Unicel: UHD-SR137, Filbur: FC-2570
  • Top View
  • Bottom View
$152.44 $121.95
(You save $30.49) TRUSTED SPA EXPERTS FOR 26 YEARS

SKU:
AK-8022
Quantity:

Product Description

Our hot tub spa filters meets or exceeds manufacturer specifications.

Sta-Rite Posi-Flo II PTM137 T-137TX T-137TXR

Filter Specifications:

  • Square Footage:
  • Media/Thickness: 4
  • Diameter: 8-11/16"
  • Length: 31-1/4"
  • Top: 4-3/16" Hole
  • Bottom: 4-3/16" Hole w/ concentric

Equivalent to:

  • Pleatco: PSR137-4
  • Unicel: UHD- SR137
  • Filbur: FC-2570
  • OEM: WC108-70S2x

This Filter Fits The Following Brands:

 

Filter Glossary

sae.png

As you can see in this graphic, when looking at a filter's threads from the side the difference is very obvious. Standard, sometimes called "MPT" or "Male Pipe" threads are smaller and have a higher number of threads than the S.A.E. style. The S.A.E. threads are large and are square in nature almost resembling a child's toy.

  • MPT: Male Pipe Thread
  • FPT: Female Pipe Thread
How to measure a hot tub filter references:

Spa Care Center or Pool Care Center

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