The company manufactures round, nonresidential ductwork with AgION™ antimicrobial precoated steel, in partnership with AK Coatings Inc. By combining the antimicrobial-treated product with the self-sealing SPIROsafe® duct system, Lindab claims that the ductwork suppresses the growth of mold, installs up to 25 percent faster, and is guaranteed to meet ASHRAE and SMACNA’s Leakage Class 3.