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Identify radiator type by this photo

Can anybody categorize the radiator in this photo? Cast iron column? Seems too skinny. Cast iron tube? Maybe, but I am guessing cast iron thin tube. House dates to 1935 and radiators are original. I have two other types and will post those pics separately. Thanks, y'all.


  • Tinman
    Tinman Member Posts: 2,808
    Cast iron tube.
    Steve Minnich
  • Motorapido
    Motorapido Member Posts: 307

    Cast iron tube.

    Thanks, brother. Follow-up question. I seem to see conflicting info about measuring EDR. Do I measure radiator total width, or width of individual sections and then count the number of sections?
  • Fred
    Fred Member Posts: 8,542
    edited February 2017
    Height from floor to top of Rad, number of tubes from front to back (looks like 4) and number of sections from side to side.
  • Koan
    Koan Member Posts: 439
    Just count the number of sections and measure the height.

    4 tube cast Iron. measure the height. count the sections. the chart is EDR in Sq ft per section. Multiply. see the chart below

    So if your 4 tube radiator above is 26'' tall and 12 sections wide
    you have 2.75 sq ft EDR per section times 12 = 33 sq ft EDR for that radiator