Replacement spa filter for Watkins 31489, Pleatco PWK30, Unicel C-6430, Filbur FC-3915, 73178, 73250, 71825

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Sku: AL0901

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Replacement Spa filter for the following spa models Watkins 31489Pleatco PWK30Unicel C-6430Filbur FC-3915, 73178, 73250, 71825P/N0969601.

Can’t find your filter check out our compatibility table click here

AL0901 Spa & Hot Tub Cartridge Filter has been scientifically engineered and optimised as a direct replacement for:

  • Watkins 31489
  • Pleatco PWK30
  • Unicel C-6430
  • Filbur FC-3915, 73178, 73250, 71825
  • P/N0969601.

If you do not know the replacement part number for your cartridge, then choosing the right cartridge can be accomplished by measuring your existing one and comparing it with our list below.

Diameter 5 7/8 “ 149 mm
Length 10 1/2 “ 267 mm
Top Hole 1 15/16 “ 49 mm
Bottom Hole 1 15/16 “
Material Area ? 30 Sq feet 2 Sq meters
Material Weight ? 4 135

They are replacement filter cartridges that fit into pools and spas made by:

Hot Spring Spas, Hydropool Industries

All our Spa Filters are made from Durable and washable density combined micro membrane cloth that is pleated so that it maintains it’s strength even when loaded with sediment, our specially designed high flow core is designed to support the filter while providing industry leading flow rates to reduce wear on your pump.


Our Spa Filters are Tested and certified by IAPMO, NSF/ANSI 50 & SGS

This hot tub filter from Alford & Lynch comes with a 100% money back guarantee.


Pack Size

Pack of 1, Pack of 2, Pack of 3

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