The combination of iron and manganese reducing filter and GAC filter delivers an effective 5-stage filtration process, which reduces large particles and sediments larger than 5 microns. This whole house water filtration system can effectively reduce iron up to 99.3%, manganese up to 96.8%, and chlorine up to 97%. Perfect compatibilityCompatible with GE FXHTC, GXWH40L, GXWH35F, GNWH38S, GXWH30C, GNQH38S, American Plumber W10-PR, W10-BC, W15-PR, WRC25HD, WHIRLPOOL WHKF-WHPCBB, WHKF-GD25BB, Pentek RFC-BB, Culligan HD-950A, RFC-BBSA, WH-HD200-C, ATRIKX-CTO2-HD10, W50, W5CPHD, HD950, WGB21B, Waterdrop WD-WHF21-PG, WD-WHF21-FG and most systems with 10 in. x 4.5 in. filters. Waterdrop Whole House Water Filter, Carbon Filter, Reduce Iron and Manganese Filter Cartridge, Replacement for GE GXWH40L, FXHTC, Ispring, Culligan RFC-BBSA, Whirlpool, Any 10 in. x 4.5 in. System, 5 Micron.