One of the filter is not Watts. Manufacturer: Watts• Actual Filter Size: 2-1/2" x 20"• Micron Rated: 20 Micron• Core/Center Tube: PP• Temperature Rated: 140°F Watts Poly Wound Filter Cartridges can be used to remove dirt, rust, sand, sediment and silt from your water.Specifications of the SF20-20• Manufacturer: Watts• Actual Filter Size: 2-1/2" x 20"• Micron Rated: 20 Micron• Core/Center Tube: PP• Temperature Rated: 140°FStandard Features of PP Wound filters• Polypropylene fibers for purity and chemical compatibility• Meets FDA requirements for food & beverage contact• Standard cartridges rated for temperatures to140°F ( Up to to 200°F with SS Cores )• Packaged in poly-bags for cleanliness• Filter used to remove dirt, rust, sand, sediment and silt from your water• These filters are recommended to be changed every 6 to 12 months, or sooner, depending on water quality, usage or application. • Manufactured from 100% pure polypropylene fibers
