ICC codes incorporate by reference the mechanical, fire safety, indoor environmental quality, and other standards promulgated by the following organizations:

• National Fire Protection Association (NFPA)
• Underwriters Laboratories, Inc. (UL) and its Canadian affiliate (ULC)
• American Society for Testing and Materials (ASTM)

Following is a summary of Standards promulgated by the above authorities which are most important to the design, fabrication, and installation of HVAC duct systems incorporating fibrous glass insulation.