Watts SS 3 TR GXG 4X4 Part of the TR2 Series detectable warning mat finder IAMPO and UPC listed IAMPO and UPC listed Specifications Body Material Bronze Body Pattern Straight Brand Watts Disc Material Brass Disc Type Conical EAN 098268478174 Inlet Connection Size 3 4 IN Inlet Connection Size Metric 20 MM Inlet Connection Type Female Threaded Inlet Thread Type NPT Lead Free NO Maximum Operating Temperature Celsius 38 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