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The Watts Pleated 20'' Cyst Filter Cartridge (Watts FM-BB-20-1A) is a 20"L x 4 1/2"D pleated water filter replacement cartridge used primarily in whole house water filter systems to reduce cysts (99% of Cryptosporidium and Girdia) though it will also reduce other contaminants such as sediment, dirt, turbidity, limescale, rust, sand, silt, and other common particulates down to the 1 micron level.
This Watts Flo-Max pleated water filter uses advanced synthetic pleated polyester filtration technology for a larger filter surface area, longer cartridge life, higher flow rate, greater dirt holding capacity, lower pressure drop, and more efficient cyst and sediment filtration when compared to other filters which use different types of filter media such as resin, melt blown, spun, string wound, etc. The 100% synthetic cellulose-free pleated polyester media does not contain binders or additives. Because it is a Full Flow filter with a large diameter (4.5"), the Watts FMBB201A features higher flow rates than standard diameter (2.5") filters.
Watts Flo-Max 20" Pleated Cyst Water Filter Specifications (FM-BB-20-1A):
This Watts pleated filter is a compatible replacement cyst filter cartridge for similar pleated filter brands of all types including Pentek filters, Ametek filters, Culligan filters, Whirlpool filters, US Filter filters, Ace filters, American Plumber filters, Bruner filters, Plymouth filters, Pentair filters, and other name brands. It will fit all whole house filter housings which use a 20" x 4.5" Full Flow water filter replacement cartridge.
More technical information about Watts Flo-Max Series water filters can be found here.
The Watts FM-BB-20-1A is also known by part number US70241.