2.1 This standard may be used to determine the structural strength, dimensional stability, durability, and leakage characteristics
of HVAC air ducts and fittings.
2.2 This standard does not cover:
a. effects of aerosols, solid particulates, corrosive environments, or combustibility
b. long-term effects of extended service
c. seismic qualifications
d. underground ducts
e. plenums and equipment casings
f. supports for ductwork and fittings