Watts SF-20-425 20" x 4.5" String Wound Standard Filter Cartridges PureT (B890-BK34) 20" Filter Housing 3/4" NPT Blue/Black The standard 8

The standard 8

This lid cover is designed specifically for Autotrol I-Series control valves commonly found in residential and commercial water softening and filtration systems

Reinstall housing cap with lubricated o-ring

Compatible with brands including Pentek

and rust staining in whole-house water systems

Watts SF-20-425 20" x 4.5" String Wound Standard Filter Cartridges PureT (B890-BK34) 20" Filter Housing 3/4" NPT Blue/Black The standard 8The Watts SF 20 425 delivers true depth filtration through precision string wound polypropylene construction, engineered for demanding commercial, whole house, and well water applications. This 20" x 4. 5" cartridge handles everything from mineral acids to caustic alkalis with exceptional dirt holding capacity and minimal media migration. SPECIFICATIONS Watts SF 20 425 Technical Details Dimensions 20" x 4. 5" Micron Rating 5 Micron Filter Media