Length:Length is measured from the outside edge of end cap to end cap, not including any handles, threads or slip fittings. 8"
Top:This is the actual inside hole diameter, excluding any taper.4-1/16" Open
Bottom:This is the actual inside hole diameter, excluding any taper.4-1/16" Open
Media:25 SFAntimicrobial 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".PMA25-M
Filbur:Filbur part numbers start with an "FC-" like "FC-0360".FC-1008M
The filter fits my MasterSpa Twilight series just fine, but it is opened on both ends and does not twist in. So if you are purchasing this as an alternative to the double filter, then see if there is an insert that closes off the top and is able to screw into the filter opening. The filter itself is great and fine, but again as a substitute for the original this is not what you are looking for.
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