The Sheet Metal and Air Conditioning Contractors’ National Association (SMACNA) develops standards and manuals for the sheet metal and air conditioning industry. Recognized as a leader in promoting quality and excellence, SMACNA represents 3,500 signatory contracting firms with more than 100 chapters throughout the United States, Canada, Australia, and Brazil.
GreenSeam is the best source for HVAC snap-lock pipe and fittings in North America. Our products are completely factory sealed and are engineered to meet tight manufacturing tolerances ensuring the perfect low pressure duct system. Our factory sealed products meet the highest SMACNA Leakage Class without any additional sealing products.
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