2XSPA Filter Cartridges for 6CH-940 DURABLE PRIMIMA BY LIGHTWEY Description: Length: 8 1/4"; Outer Diameter: 6"; Bottom: 1 1/2" SAE Thread. Filtration Area: 45 sq ft. PLF6CH-940 Hot Tub compatible with PWW50P3 (NOT PWW50P4), 6CH-940, Filbur FC-0359, Waterway Plastics 817-0050. Pool filter cartridge replacements, this 6CH-940 pool filter filter can ensure that the water is clean and fresh. The filter efficiently removes hair, leaves, dust, sediment, sand, etc. Brand new filter cartridge filtration. The 6CH-940 hot tub filter features a unique, durable, trilobal filter cloth structure, making the filter cartridge reusable. Specification: Size: 15x24.3cm Compatible with the following models: For pack50, For 6CH-940, For FILBUR FC-0359, For Waterways 817-0050 Package includes: 1x Replacement Filter Cartridge (2-pack) Seller Warranty: 0 days