Old RHEEM…is it 1980 or 1991?
Serial Number: 0480M64091
1980…April, 1980 made in plant “M” to be exact.
…and if you still have doubts, here’s the “horse’s mouth”! 
http://www.rheem.com/Documents/ResourceLibrary/TSB_Common/1207.pdf
Old RHEEM…is it 1980 or 1991?
Serial Number: 0480M64091
1980…April, 1980 made in plant “M” to be exact.
…and if you still have doubts, here’s the “horse’s mouth”!
http://www.rheem.com/Documents/ResourceLibrary/TSB_Common/1207.pdf