Prier 479-12 12-Inch Mansfield Style Frost with 1/2-Inch FIP and 3/4-Inch MIP Prier has made great efforts in developing unique, cutting edge products based on feedback 12" PRIER Residential Wall Hydrant, Heavy Duty, Anti-Siphon, Mansfield Style, 3/4" MIP x 1/2" FIP Connected to the supply piping in the heated portion of the structure, eliminating the possibility of freezing