The 3M Model A3 Replacement Cartridge is designed for use in the 3M Recreational Vehicle/Marine Filtration Systems WV-A3, WV-B2, and WV-B3. NSF Tested and Certified. Part number 5613416.
- Reduces >95% of Chlorine
- Reduces Sediment, Dirt, Rust, Sand, and Silt down to 1 Micron
- Built-In Bacteria Inhibitor
- Patented Carbon Block for Improved Absorption
- 3.5 GPM Flow Rate
- 15,000 Gallon Filter Capacity
- 4 7/16" x 11 3/4" Dimensions
The Model A-3 should be changed every 1 year or 15,000 Gallons depending on water quality and usage.