The Aqua-Pure AP717 cartridge is a triple action in-line filter, removing sediment, chlorine taste/order, and hard-water scale. Used primarily to pre-filter water feeding ice-makers, if features an in-line design for fast and easy replacement. The AP717 filter is the perfect in-line water filtration solution when a refrigerator does not have a pre-existing water filter. The filter has a 1/4" inlet/outlet connection, a flow rate of up to 0.5 gpm, and a 1500 gallon capacity. The system uses specially formulated activated carbon and progressively porous media for effective filtration down to 5 microns nominal. This in-line filtering system can also be uses as a pre-filter for drinking fountains, coffee machines, and drink dispensers. Our recommended refrigerator system alternative for the discontinued AP317. Product Benefits: Features both a 1/4" threaded inlet/outlet and supplied threaded connectors to convert to a 1/4" quick connect inlet/outlet Designed with specially formulated high adsorption activated carbon media to help provide reduction of unwanted chlorine taste and odor Designed with premium performance depth pre-filter for high sediment reduction efficiency and longer cartridge life than our previous design Includes scale inhibition media to help protect equipment and ice makers against scale build-up NSF/ANSI Std. 42 listed under Aesthetic Effects for Chlorine Taste & Odor