Product Name: Manufacturer of CTO and UDF Carbon Filter for RO System Model NO.: 10" and 20" Pipe Design Rate: Incremental Descaling Function: Descaling Function Water Temperature: Cold, Warm & Hot Water Purification Efficacy: Straight Drink Certification: CE Operating Principle: RO Style for Purifier: Wall Mounted Model: 10 Inch, 20inch Trademark: OEM Transport Package: 25 PC Per Box Specification: CE Origin: Shanghai or Ningbo HS Code: 84219910 Product Description GAC and UDF,normally ,it is used as 2nd stage,Granule Activated Carbon,remove the odor,chlorine andchlorineby-productsand other organic matter from the tap water.10inch and 20 inch are available.white cap and blue cap are for option.package for 10" GAC25 PCS/BOXpackage for 20" GAC16 PCS/BOXWelcome OEM.