Howdy! Still working on our hvac and love all the help here.
So we're installing a Wolf 1500 cfm remote blower with about 25' of 10" duct with (5) 90 elbows. What gauge metal do I need and does stainless do much for the upgrade in price? Will galvanized hold up for 50 yrs? What insulation do I need? R-4? And lastly are screws ok to use to connect ducts or do they create a grease trap?