Laguna Coupling with Female Fitting for Max-Flo 4200 Waterfall and filter Pump, 1-1/4 to 1-1/2-Inch Reversible argyle raincoat Fits Laguna Max-Flo 4200 waterfall and filter pump Comes with 1-inch female fitting Measures 1-1/4 to 1-1/2-Inch diameter