If you understand what it says on this board, then you certainly understand a lot more about HVAC than I do! The only thing that looks familiar to me here is that CFC production or import has been banned since Jan. 1, 1996.
The photos in this slide show were taken in the mid-1990's by Steve Grande on his Amtrak travels throughout the nation. The size of the photos is purposely smaller as disk space was expensive and download speeds were slower at that time.
