648PRO Professional Refrigeration Model Timeline


  • Production runs for Professional Sub-Zero models.
  • How long was a PRO48 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 PRO48 or 648PRO?
  • How old is my refrigerator?


648PRO models are current production products.

Model First Production Year Last Production Year
648PRO (PRO48) 2005 N/A
648PROG (PRO48G) 2005 N/A

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