Filter Cartridge 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 Cartridge Media Resin Filter Design Solid Filter Type Carbon Sediment Maximum Temperature 100 Degrees F