SMACNA's HVAC Duct Construction Standards - Metal and Flexible is intended for designers, fabricators, and installers of commercial and institutional duct construction projects. The standards contain prescriptive application tables for the fabrication and installation of rectangular, round, oval and flexible duct for positive or negative pressures up to 10 inches water gage (2500 Pa). Also includes standards for duct liner, hangers, tie rods, joints, leakage seal classes, and accessories.
ANSI/SMACNA 006-2006 history
1970ANSI/SMACNA 006-2020 HVAC Duct Construction Standards - Metal and Flexible, 4th Edition
2006ANSI/SMACNA 006-2006 HVAC Duct Construction Standards - Metal and Flexible, 3rd Edition