The quality you expect with the performance you need, so you can enjoy your pool worry free. Dimensions and specifications of the cartridge. 200 Sqft of filtration area. Dimensions: 28-3/16″ Length, 10-1/8″ Outside Diameter, 4 Top and bottom Inside diameter (open hole). Nominal dimensions: 28″ L x 10″ OD x 4ID. End caps are both open with polyurethane material to provide high impact and perfect seal, our core is injection mold creating more stability than drilled PVC pipe. Swim Clear C200S, PA200S, PLFPA200S. Cartridge meets OEM specifications. This Package contains 1 cartridge.