Replacement Models: The filter can be used in any standard 104.5 heavy duty filter housing. Compatible models: FXHTC, 3M Aqua-Pure 800 Series, 3M Aqua-Pure Systems AP801, 3M Aqua Pure AP810/AP811, Whirlpool WHKF-GD25BB, WHKF-DWHBB,4WH-HDGR-F01, KleenWater KW810EC. Waterdrop is an independent brand. Efficient filtration:The combination of PP filter and GAC filter effectively delivers a 5-stage filtration process, which reduces large particles and sediments larger than 5 microns. The whole house filter replacement also ensures your drinking water to contain no chlorine, sand, rust and other impurities. Filter adopts natural coconut shell, which reduces unpleasant odor and taste in your tap water. You can now enjoy pure water with an improved taste. Improved lifespan:The PP filter will serve for 3-6 months while the filter will serve for up to 6 months before replacement. The extended lifespan helps you save money on sudden replacements. Cost-effective Choice:By ensuring that no harmful contaminant ends up in the filtered water, this whole house water filter prevents rusting and protects your water-related appliances to last longer.