Jet bodies sit behind the spa shell and connect the visible jet internal to the plumbing system, so connection style and gasket compatibility are critical. The Waterway Plastics Poly Storm Threaded Jet Body [3/8" RB x 3/4" RB] [SGMS Grommet] (228-4408) is a replacement threaded jet body for compatible Waterway Poly Storm applications. This body is used when the original jet body is cracked, leaking, stripped, or being installed in a repair that requires 3/8 inch ribbed barb air and 3/4 inch ribbed barb water connections. Matching the Poly Storm body style and SGMS grommet requirement helps create a secure jet installation and reduces the risk of leaks behind the spa shell. Waterway Poly Storm threaded jet body 3/8 inch ribbed barb x 3/4 inch ribbed barb reference SGMS grommet compatibility reference Useful for leaking or damaged jet body replacement Supports secure spa plumbing and jet installation