3" 4' X 4' STAINLESS STEEL IN-BUILDING RISER

3 inch, 4 x 4 foot stainless steel in-building riser is used to connect to the main building overhead fire system or potable water supply. The fitting passes under the foundation without joints and extends up through the floor. This unit is grooved at the inlet for easy connection to the underground supply and grooved on the building side for easy connection to either the overhead fire sprinkler system or potable water supply.