Professional Refrigeration Model Timeline


  • Production runs for Professional Sub-Zero models
  • How long was a PRO 48 unit made?
  • How long was a 648PRO unit made?
  • When was a unit produced?
  • What was the last year a Pro unit was made?
  • What years was a Sub-Zero unit manufactured based on serial number?
  • What are the manufacture dates of a PRO4850, PRO3650, or 648PRO?
  • How old is my refrigerator?


PRO4850 and PRO3650 models are current production products.

ModelFirst Production YearLast Production Year
648PRO (PRO 48)20052019
648PROG (PRO48G)2005


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