iSpring WGB21B 2-Stage Water Filtration System


The iSpring WGB21B 2-Stage Whole House Water Filtration System features large sumps fitted for 4.5" x 10" filter cartridges. Developed for residential applications, the filters installed in the system should remove chlorine from water as well as sediment, rust, pesticides, herbicides, industrial solvents, and various other contaminants. Find the compatible replacements below along with recommended change-out schedule.



  • STAGE 1 - Sediment Filter (155357-43) - Replace Every 1-6 Months
  • STAGE 2 - Carbon Block Filter (155548-43) - Replace Every 1-6 Months

PDF iconiSpring WGB21B Owner's Manual