Reverse Osmosis Systems

iSpring WGB21B 2-Stage Water Filtration RO Compatible Replacement Filters

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.

Replacement Filter Info

Sediment Filter (155357-43) - Replace every 1-6 months or as needed

Carbon Block Filter (155548-43) – Replace every -16 months or as needed

Helpful Filter Information

Not all filters have the same replacement schedule. Replace the RO membrane filter every two years. Replace all other filters every 6-12 months. Help keep your system sanitary by never using filters longer than 12 months, except the RO membrane filter, regardless of how much water you use.

Manuals & Instructions