Pentair 46540000 5/16-Inch Nozzle Venturi Jet Replacement Pool Specialty Fittings Venturi jet replacement Fits Pentair pool specialty fittings Comes with 5/16-inch nozzle, 1/2-inch socket air by 1-1/2-inch socket water, 1-1/2-inch socket return Jets for concrete construction Measures 16-inch length by 8-1/2-inch height by 14-1/2-inch width