Water Softening Cartridge Big Blue 20" 10 inch x 4.5 inch Big Blue Filters2765 Inlet port fits 0

Inlet port fits 0

7-inch profile

UV requires clear water

Slowly turn on water supply

and the dual O-rings mean you can hand-tighten confidently without over-torquing or cracking the housing during membrane replacements

Water Softening Cartridge Big Blue 20" 10 inch x 4.5 inch Big Blue Filters2765 Inlet port fits 0Isopure Water Water Softening Cartridge Big Blue 20" Ion exchange resin cartridge for whole house Big Blue housings 20 Inch Length 4. 5" Diameter Big Blue Compatible Resin Media This 20 inch water softening cartridge fits standard Big Blue 4. 5" x 20" housings and uses ion exchange resin to reduce hardness minerals like calcium and magnesium. Designed for point of use applications or as a pre treatment stage before RO systems in areas with moderately