Aqua Pro Polar White Plastic Surface Mount Flange Fresh Water Inlet 27893 10-0693

It has 1/2 inch MPT inside connection. Cutout is 1-1/4 inch diameter & overall dimensions measure 3 inch outside diameter. These are made of non-toxic materials, have "poppet" style check valves & 1/2 inch pipe thread. Certified to IAPMO and NSF standards. Sold in retail package.