Clarathon Threaded Hot Tub Filter Cartridge for Sunrise/Viking Spas FC0314 – SpaDepot.com
Amazon.com : PACETAP 1 1/2" SAE Thread Screw in Spa Filter Replacement for Pleatco PWW50P3(NOT PWW50P4), for Unicel 6CH-940, for Filbur FC-0359, for Waterways 817-0050, 2 Pack Spa Hot Tub Filter for
14294 Viking Spas replacement filter
FILTER CARTRIDGE 50 SQ FT AC FOR VIKING SPA - Leisure Depot
Amazon.com : Spa Filters Replacement for Unicel 6CH-940, Hot Tub Filter Compatible with PWW50P3 Spa Filter,for Viking Spa Hot Tub Filter,for Filbur FC-0359, 2 Pack : Patio, Lawn & Garden