King wall heater - fan works but no heat
I finally heard back from King today (very helpful once you get a response).  It answers my questions.
also i verified it was the heating "element" by taking it out of a working one, so i only had to replace that!!!

response from King (manufacturer):


  Yes this is our W series https://www.king-electric.com/pdfs/W_WEB.pdf
  These have a 1 year warranty.
  
  Here is the element
  http://www.morelectricheating.com/default.aspx?page=item+detail&amp;itemcode=KINGELECTRIC50303&amp;catlist=1363&amp;parent=7983
  
  Its best to go by our catalog for dimensions. Other sites are popular
  for getting the diminsions wrong. The dimensions have been the same
  since the unit came out in 1992
  
  Here is the unit you need
  http://www.morelectricheating.com/default.aspx?page=item+detail&amp;itemcode=KINGELECTRIC12743&amp;catlist=262&amp;parent=1366