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NSF 44 Certified
Flexcon FWRO20
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Now that it is made in America
Limescale is formed when cold water is heated in a water heater
US Water Magna 4.5" x 20" 1 Micron Replacement Cartridge | 222 Seal Silt NSF 44 Certified4. 5" x 20" US Water Magna Cartridge 1 Micron 222 Seal Features Magna Seal It has a positive o ring seal unlike flat top filters Compared to many other pleated filters on the market, it offers significantly more filtration surface areatypically 30 50% moreallowing for superior dirt holding capacity and longer service life. Magna Contaminant Capacity Traps 12 times sediment depth filters, 8 times string wound filters, 2 times other pleated sediment
