. . . . "They are also used in applications such as Ice Machines, Film Processing, Beverage, Coffee, Analytical, Wineries, and many others.Polypropylene Sediment, 4 layer structure nominal micron rating.Reduces fine sediment, sand, silt, rust and scaleSuitable for Municipal and well water Compatible with the following:Ace Hardware - 4137295, P5ACE, 45331, 93023AquaPure - AP110, AP110-2C, GD-25-1005, 93023," .