Clarathon FC-0301 Spa Filter for Advanced Spa Design/LA Spas PMAX50-P4

Specifications: Diameter:Filter cartridge diameter (width) is measured across the outside edges of the end cap at its widest point.5-5/8" Length:Length is measured from the outside edge of end cap to end cap, not including any handles, threads or slip fittings. 8-1/2" Top:Handle Bottom:Outer Diameter (OD) of threads measures approx. 1-7/8.1-1/2" Fine Thread Media:25 SF Premium replacement for: Pleatco:Pleatco part numbers start with a "P" like "PWW100ST".PMAX50-P4 Filbur:Filbur part numbers start with an "FC-" like "FC-0360".FC-0301