Correct vent lengths, slopes, and terminations restrict icing and backdrafts
https://padlet.com/ericgrek67ksagn/bookmarks-ogikdsppffz68pbm/wish/YBl3Z2ONvvl6Wv16
Correct vent lengths, slopes, and terminations stop icing and backdrafts, ensuring trustworthy exhaust for condensing and non-condensing furnaces.