Remembering which filter to use has never been easier! Simply look for the Starburst Number on your filter and match it to the package number.Features KDF® and activatedcarbon. KDF is made of a high purity copper/zinc alloy that creates an electro-chemical oxidation-reduction that neutralizes harmful contaminates including bacteria. When combined with activated carbon it removes or greatly reduces chlorine, heavy metals like mercury, VOC, chemicals, sediment, lime/scale buildup and that hydrogen sulfide that causes a rotten egg smell. Without bacteria present in your water, you€™ll experience greater performance and longevity from your filter and some of the best tasting water you€™ve ever had!Designed with garden hose fittings so it€™s easy to filter all of the water entering your coach! Offers the largest capacity and flow rate. Comes with cartridge (88-2006) for up to two years of continuous use before cartridge replacement. Priced each.