This Flow-Pur GAC/KDF cartridge filter is designed for use in the POE12DSA1KDF 2-stage RV system. The GAC filter media helps ensure that sediment, chlorine and other materials that cause bad taste and odor are greatly reduced and the KDF helps to inhibit scale. The Flow-Pur #5 Rv water filter has a Micron 5 rating, meaning it is capable of removing partcles as small as 5 microns or larger from the total body of water without compromising performance. Filter cartridge has a flow rate of 2.5 GPM. This Flow-Pur Filter cartridge will fit in most industry standard 10 inch filter housings, allowing for a plethora of available housing spaces in the exterior of an RV, boat or camper. At Flow-Pur, we make sure our products can be used everywhere, since everyone deserves clean water. In addition to removing VOCs, this filter improves the taste of water and removes unwanted odors. Water enters this filter after the storage tank and acts as a final filter to crispen up the flavor and enhance the taste of your water. These durable filters are crafted from high-quality materials for maximum filtration. Filter life may vary based upon local water conditions, but it is generally recommended to replace sediment and carbon filters every 6 months. Water. It's in our name and close to our hearts. Since 1874, Watts Water Technologies has been delivering innovative technologies that make the world's most precious resource safe and accessible. Everything we design is made to keep the Earth's most precious resource safer, cleaner, and more useful for our customers. Our family of brands offers one of the most varied product lines in the world, with world-class, water-related solutions.