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Home > Equipment > Filters > Types of Filters > Diatomaceous Earth (D.E.)
Pentair SMBW 4000 Series 58 sq. ft. D.E. Filter
Pentair SMBW 4000 Series 58 sq. ft. D.E. Filter
Part #: 147411

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For water that literally sparkles

Our SMBW 4000 Series Filters remove the tiniest of contaminants, so your water truly sparkles. In addition to exceptional filtration, they feature sheet molded fiberglass tanks and Noryl® rotary backwash valves for long life, dependable performance and easy maintenance.


  • Maximum Operating Pressure 50 psi
  • Corrosion-resistant 20 in. diameter fiberglass filter tank for strength and durability
  • Unique Spiro-Mite grid design provides high efficiency filtration and longer filter cycles
  • Exclusive clamp ring design is proven to be safe, strong and reliable. It allows for quick and easy access to internal components
  • 2 in. plumbing connections provide maximum flow