ASHRAE November 23, 2021 draft text duct systems Click here to purchase Product Details Published: 2020 Units of Measure: I-P File Size: 1 file , 140 KB Product Code(s): D-90556 You May Also Like ASHRAE Complying with Standard 90.1-2013: Envelope/Lighting ASHRAE ASHRAE Transactions – 2003 Winter Meeting, Chicago, IL, Volume 109, Part 1