IPW INDUSTRIES INC compatible Watts 1 Year Annual Replacement Filter Pack contains high-quality, replacement filters for all standard reverse osmosis and filtration systems. This 7-pack RO annual filter pack fits Watts 5-Stage standard reverse osmosis systems and other standard RO systems (i.e. Apec, iSpring, Home Masters, etc). The filter pack features two 5-micron sediment filters, four 5-micron coconut shell carbon block filters, and one 10-inch polishing filter (one year's worth of replacement filters). This annual filter pack will save you time and money compared to buying individual filters. High Quality Sediment and Carbon Filters The 5-micron Sediment Pre-Filter traps particulate matter like dirt, rust and silt that will affect the taste and appearance of your water. The 5-micron Advanced Coconut Shell Carbon Block Pre-Filter reduces chloramines, chlorine as well as unpleasant taste and odors. Carbon Post-Filter for final 'polishing' of drinking water. This filter set includes: Two 5-micron Sediment Filters, Four 5-micron Advanced Coconut Shell Carbon Block Filters, One 10-inch Polishing Filter. NOTE: RO Membrane is not included with this filter pack. Refer to your system's instruction manual for specific filter change instructions. Filters should be changed on a regular basis. Specifications: Filters fit standard 25-cm (10-inch) cartridge filter housings Meet or exceed most manufacturers' specifications Perfect for carbon filtration systems No carbon fines to rinse Fit same housing as Granular Active Carbon Filter Replace sediment and carbon filters every 6 months or 3000 gallons, whichever comes first One full year supply saves you time and money Watts replacement filters are designed for use in five-stage reverse osmosis and water filtration systems. CARBON BLOCK FILTER&n