ISpring WGB32B Three Stage 20-Inch Big Blue Whole House Water Filtration System. The item “ISpring WGB32B Three Stage 20-Inch Big Blue Whole House Water Filtration System” is in sale since Wednesday, February 26, 2020. This item is in the category “Home & Garden\Kitchen, Dining & Bar\Small Kitchen Appliances\Water Purification\Water Filters”. The seller is “phoeni-55″ and is located in Cincinnati, Ohio. This item can be shipped to United States.