Recently bought a trailer furnace. The depth in my 74 Boler is about 19 1/2 inches and the furnace depth is about 22 3/8 iches. I've seen photos that shows a furnace flange,any ideas where I might get one of these,or what else I could use.Thanks for any suggestions
Bailey Boler

Hi: How about some furnace duct sheet metal and some good old pop rivets to make your own??? Alf S. North shore of Lake Erie