The Pleatco Filtration Pool filter cartridge you are viewing has been designed to meet high quality standards and perform exceptionally well. You will notice the ends caps always have Pleatco proudly stamped along with the part number. It is highly likely that our filter was the original product in your pool or spa filtration system and that should let you know that we have designed this product to meet or exceed OEM specifications for water filtration. The Pleatco Advanced Filtration Fabrics are designed to have the highest fiber count in the industry and to provide the most advanced filtration technology available. The Superbond bands around the filter are break resistant and designed to keep the pleats sharp and separated for greater flow and superior filtration. The Pleatco Free Flow Core is our unique design to provide maximum filtration performance by optimizing water flow. It is made of super strong ABS, not just PVC plastic pipes like others. The reinforced center cores are meticulously engineered to allow for increased dirt loading and high pressures while providing ultra-solid protection and structural integrity of the cartridge.