how to use a duct slide 2 size duct work. it's not called a ductulator, well maybe it is by some. I used that in the description so if somebody is doing a search they might find it this way. If you're looking for rules of thumb search elsewhere because I'm going to use math and references to show you how to size ducts properly. This is the short version one take for the whole shebang. Friction rate forever!
28 июл 2024