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3M Model B1 Replacement Cartridge


3M Model B1 Replacement Cartridge
$91.00 /ea
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Retail: $99.95
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Product Information

The 3M Model B1 Replacement Cartridge is designed for use in the 3M Recreational Vehicle / Marine Filtration System US-B1 and US-A1.

B1 Specifications:

  • Reduces >95% of Chlorine
  • Reduces Sediment, Dirt, Rust, Sand, and Silt down to 0.2 micron
  • Reduces Bacteria up to 99.9999%
  • Reduces Cysts (Giardia, Cryptosporidium) up to 99.999%
  • Reduces Algae and Mold Spores up to 99.9999%
  • Patented Carbon Block for Improved Absorption
  • Patented Dual-Zone Nylon Membrane Bacteria Barrier
  • 1.5 GPM Flow Rate
  • 2000 Gallon Filter Capacity
  • Built-In Bacteria Inhibitor

The B-1 should be changed every 6-8 months or 2000 Gallons depending on water quality and usage.


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B1 is used in the following Models
 3M System US-A1
 3M System US-B1
" Happy with my item, the price, and the fast delivery of my filters! " - Sam, Atlanta, GA
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