Jet Internal, Custom Molded Products Generic Poly Jet. White, 3-3/8" Deluxe Scalloped face, with Roto style internal and Adjustable on/off control. Specs: Installation Type - Thread In Face Diameter - 3-3/8" Jet Part Type - Internal Diffuser Opening Type - 9 Base Diameter - 2-1/8" Total Length - 3-3/4" - 4-7/16" Manufacturer - Custom Molded Products Model - Poly Jet Color - White Internal Type - Roto Face Style - Deluxe Scalloped Special Feature - Adjustable On/Off Control