This is a premium Pleatco PDM25P4 Filter Cartridge. The Pleatco PDM25P4 has a longer life, uses less energy, makes cleaner water and uses a free flow technology which is 20% more efficient. Not drilled PVC which causes less wear and tear on pump.
New 6) Pleatco PDM25P4 Premium Pool and Spa Filter Cartridges
Longer Product Life
REEMAY Filtration Fabric
Free Flow technology (approximately 20% more efficient). Not drilled PVC! Less wear & tear on pump