Sloan Royal 150 3 3/4" from center of valve to finished wall. Quiet, Concealed, Diaphragm Type, Rough Brass Closet Flushometer for either left or right hand supply. Concealed Water Closet Flushometer 1" I.P.S. Outlet for bowls and flushing rim floor drains. Water Saver with 1.6 gpf. Flush valve has 1" I.P.S. union outlet NO FLUSH CONNECTION.