OEM quality replacement filter cartridge for Dynamic Series I, Series II, Series III, Series IV & Waterway. Replacement filter cartridges from Pleatco are manufactured using the highest quality raw materials. Durable end caps & unparalleled resistance to harsh water treatment chemicals help Pleatco filter cartridges last longer than other replacements. A properly designed "Free Flow" center core provides 20% more efficient water flow than a simple drilled PVC core you might have in your filter today. While it may not seem like much, a more efficient water flow results in less wear on your pump & ultimately saves you money in energy costs from running the filter system for shorter periods of time.

• 4 pack of cartridges
• Outer Diameter (inches): 5 ~ Overall Length (inches): 13 5/16
• Top Hole Diameter (inches): 2 1/8 ~ Bottom Hole Diameter (inches): 2 1/8
• Filtration Area: 50 sq. ft.
• Manufacturer's Part#: 03FIL1600, 17-2380, RTL-50, 100533, 6540-471, 25391, 817-5000, R173434, Pleatco#: PRB50-IN ~ Unicel#: C-4950 ~ Filbur#: FC-2390

4 pack of cartridgesPleatco