5) PLEATCO PWK30 Pool/Spa Replacement Filter Cartridge C-6430 Watkins Hot Spring
Price 78.20 USD
Pack of 5 Pleatco PWK30 Replacement Filter Cartridges * Free Flow technology (approximately 20% more efficient). Not drilled PVC! Less wear & tear on pump * Replaces: Unicel C-6430, Filbur FC-3915 * Watkins Hot Spring Spas * - Diameter: 5-7/8" - Length: 10-1/2" " - Top and Bottom Hole Dimensions: 1-15/16"