SMath Forum SMath Studio Samples Rectangular Duct Size Finding From Equivalent Diameter 1 Pages (1 items) Rectangular Duct Size Finding From Equivalent Diameter - A tool for table search and selection - Messages #1 Posted: 5/18/2020 5:24:53 PM overlord 554 likes in 1333 posts. Group: Moderator Simple tool for fan duct size calculation.fan_equivalent.sm (32 KiB) downloaded 79 time(s). 1 users liked this postfrapuano 5/19/2020 2:09:00 AM 1 Pages (1 items) New Posts No New Posts