Abstract: A signal path definition element defining an ultrasonic signal path for ultrasonic signals transmitted and received by an ultrasonic flow meter is provided. The element includes two end reflection plates, a top reflection plate, and a plurality of support plates joining and positioning the two end reflection plates and the top reflection plate. Further, the end reflection plates, the top reflection plate, and the plurality of support plates are formed from a single stamped metal plate and folded such that the end reflection plates reflect ultrasonic signals between an ultrasonic signal transducer and the top reflection plate and the top reflection plate reflects ultrasonic signals between the end reflection plates.