The voluntary technical standards and manuals developed by SMACNA are accepted by the construction community and government agencies worldwide. ANSI, the American National Standards Institute, has accredited SMACNA as a standards-setting organization. SMACNA standards and manuals address all facets of the sheet metal and HVAC industry, from duct construction and installation to air pollution control, energy recovery and roofing.
Chantilly, Virginia Washington, D.C. www.smacna.org
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