The RCN-P Series Poly Cascade Nozzle produces a highly aerated column of water. It is of one-piece, injection molded polypropylene construction with a (M) N.P.T. connection. This RCN-P nozzle is available in four (4) sizes ranging from 3/8" to 1.5". The nozzle is water level dependent. Please refer to the cut sheet for technical and hydraulic data.