Length:Length is measured from the outside edge of end cap to end cap, not including any handles, threads or slip fittings. 11-3/8"
Bottom:Outer Diameter (OD) of threads measures approx. 1-9/16 to 1-11/16.1-1/4" Coarse Thread
Media:28 SF Antimicrobial Blue Antimicrobial Media inhibits the growth of bacteria on the pleated fabric that can foul and degrade a cartridge.
Premium replacement for:Pleatco:Pleatco part numbers start with a "P" like "PWW100ST".PSG27.5P2-M
Filbur:Filbur part numbers start with an "FC-" like "FC-0360".FC-0197M
My mother gifted us her Saratoga Spa Canfield which is quite a few years old and they no longer make the model # 74455 filter so we had quite the ordeal trying to find filters that fit. These were perfect! We didn't even need the prefilters!