Jet Internal, Waterway Poly Storm with Snap-In diffuser. Sterling Silver, 3-3/8" Textured Scalloped face, with Directional style internal and Adjustable onnstallation Type Snap In Manufacturer Waterway Jet Part Type Internal Model Poly Storm Face Diameter 3", 3-3/8" Diffuser Opening Type 7 Nozzle Diameter 7/8" Base Diameter 2-3/16" Total Length 4-5/16" Diffuser Length 3-9/16" Color Gray, Light Internal Type Directional Face Style Textured Scalloped/off control.