Can anyone tell me the year of my Williamson oil forced air furnace? Any other information you can give me about the furnace would be great, too. This IS a Williamson, right, even though it says "Underwriters Laboratories"? Thanks!! [^] [:-magnify In case you can't see the image well, these are the numbers on the faceplate: NO.: R-880764 MODEL NO: 1167-10-5 D58 SERIAL NO: 7913153 Click to Enlarge 32.84 KB