Amazon.com : Ketofa PWW50P3-M Spa Pool Filter, Cartridge Filter Compatible with Unicel 6CH-940Ra Filbur FC-0359M PWW50P3 817-0050 25252 Waterway Front Access Skimmer, for Aber Hot Tub 03FIL1400 : Patio, Lawn & Garden
Atomic USA Made Pool & Spa Filters Replaces Pleatco PWW50P3, Unicel 6C
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4 Pack Hot Tub Spa Filter Cartridge PWW50P3 Compatible Pleatco Unicel 6CH-940 | eBay