Find your parts diagram
Sticker on the pump body (the part with the basket), not on the motor. Motor labels from Century, A.O. Smith or Regal won't match parts.
Label on the side of the tank near the base. Size is in sq ft, e.g. 420 sq ft = C4030 or CCP420.
Rating plate inside the front access panel. Note the BTU and gas type (NG or LP).
Molded into the body or printed on top. Robotic cleaners: on the power supply.
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DPM-4950 Cartridge | R173434 | C-4950 | For Pentair Dynamic Series IV | 50 Sq Ft
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CA P65 Warning: Cancer and reproductive harm. www.p65warnings.ca.gov
The DPM-4950 Cartridge 2-Pack is a USA-made replacement set built for Pentair Dynamic Series IV DFM 50 and DFML 50 systems. Each pleated cartridge delivers 50 square feet of dependable filtration for clear, healthy pool water. With reinforced cores and chemical-resistant synthetic media, these filters exceed OEM standards for durability and performance. Each unit replaces models C-4950, R173434, and FC-2390, and measures 13 5/16" in height, 4 15/16" in outer diameter, and 2 1/8" in inner diameter. Ideal for restoring performance in pools using older or clogged filters.
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Fits Pentair Dynamic IV Systems: Designed for DFM 50 and DFML 50; replaces C-4950, R173434, FC-2390
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High-Efficiency 50 Sq Ft Filtration (Each): Captures fine particles and promotes crystal-clear pool water
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Reinforced USA Construction: Durable internal core supports long-term use under pressure
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OEM-Compatible Size: Each filter measures 13 5/16" x 4 15/16" x 2 1/8" for easy installation
- 2-Pack Value: Includes two cartridges—perfect for replacing dual-filter setups or keeping a spare
- Pentair Dynamic Series IV Filter Models: DFM 50 and DFML 50
- C-4950
- R173434
- FC-2390