Preview: HVAC duct construction standards :

Corporate Author:	Sheet Metal and Air Conditioning Contractors' National Association (U.S.)
Language:	English
Published:	Vienna, Va: Sheet Metal and Air-Conditioning Contractor's National Association, 2020.
Edition:	4th edition.
Subjects:	Air ducts -- > Handbooks, manuals, etc Ventilation -- > Equipment and supplies -- > Handbooks, manuals, etc