Tier1 Replacement for 31489 Spa Filter for 30 sq ft Hot Spring Spas and Watkins Spas and any systems that needs 5 7/8 inch (diameter) x 10 1/2 inch (length) filters
Easily replace your old filter 31489 filter， Filbur FC-3915， Unicel C-6330， PWK30， PWK30-M， PWK30-4， SD-00328 spa filter
Durable & Washable 30 sq ft Pleated Fabric Filter Media to capture sediment and other contaminants with its high strength， high flow design to give you industry leading flow rates for 3 month before your next filter change. Cleaning pleats can help extend the life of this product
The Tier1 Replacement for Watkins 31489 replacement filter can be used in place of your PWK30 spa filter
Pleated filters maximize the contact between contaminants and filter media， allowing for greater capacity and contaminant reduction
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