HVAC Duct Construction Standards - Metal and Flexible 4th Edition represents the state of the art in the sheet metal duct fabrication and installation requirements. Significant changes for this edition include; flat oval tables for positive/negative pressure applications; spray and aerosolized duct sealants; non-fiberglass duct liner applications; added information on spiral duct fittings; updates to duct hanger requirements; flexible duct hanger spacing and support bracing.
ANSI/SMACNA 006-2020.
Softcover.