Got it. Thanks. Is that a one size fits all percentage? I see where you can exclude/include it from straight duct. We generally are used to figuring a lower percentage on straight duct and a higher one on fittings. One other question about the straight duct, do short pieces (not off the coil line) figure waste with the fittings? Right now my short pieces are calculating labor with the coil line duct, gotta figure out how to change that.