General links of interest
American Iron and Steel Institute (AISI) American Society of Heating Refrigerating and Air Conditioning Engineers, Inc. (ASHRAE) International Code Council (ICC) National Fire Protection Association (NFPA) Sheet Metal and Air Conditioning Contractors National Association (SMACNA) Underwriters Laboratories, Inc. (UL) Air Movement Control Association International, Inc. (AMCA) ARI's Online Directory of Certified Equipment (Prime Net)
Manufacturers Represented by Pittsburgh Air Systems Click to visit the manufacturer's site.
