Posted inDuct Sizing HVAC Systems Duct Design (SMACNA) Posted by By Aung Myat Thu December 12, 2021 ဤသင်ခန်းစာသည် member ဝင်ထားသူများအတွက်သာ ဖြစ်ပါသည်။ Aung Myat Thu I am founder of this website and I have working experiences 15 years + in HVAC industry. View All Posts Post navigation Previous Post PsychrometricsNext PostASHRAE 2001 Fundamentals (Duct Design)