Marketing InformationThis 12 inch, 6 x 6 foot stainless steel In Building Riser is used to connect the main water supply to the building system. The fitting passes under the foundation without joints and extends up through the floor. Provided with installation tabs, this unit has a 12-inch cast iron pipe industry standard flanged end for easy connection. This 12 IN Riser is not 3rd party approved, please contact your local municipality for state code and installation requirements.