Filter , Reduces Iron, Micron Rating Not Rated, Flow Rate 5 gpm, Inside Diameter 1 1/8 in, Outside Diameter 4 1/2 in, Overall Height 20 in, Filter Media Manganese-Treated Sodium Aluminosilicate, For Use With 20 in Big Blue Housings, Application Drinking Water, Media Resin, Filter Design Solid, Filter Type Carbon, Sediment, Maximum Temperature 100 Degrees F