Fabric ductwork is somewhat limited to open-ceiling architecture and can’t be used behind a wall or in a closed ceiling. Metal ductwork’s biggest strength is perhaps its ability to be used in closed-ceiling applications. “It is there, and it works great for certain applications, but there aren’t major changes going on.” STRENGTHS AND WEAKNESSES “It’s kind of like the standard that hasn’t changed,” he said. In regards to both spiral ductwork and flexible ductwork - with the exception of a few seals, gaskets, and some new hangers - most of the market is somewhat stagnant, Kaufmann said. One thing he did note is there is a growing body of knowledge that confirms significant loss of airflow with typical installations of flexible ducts.” M&M does not manufacture flexible ductwork, but Van Rite said it continues to be popular in residential and low-pressure commercial duct applications. “Double-wall insulated spiral ductwork is very popular as are noncorrosive materials, like aluminum, stainless steel, and specialty coatings, for spiral ducts.”
“Exposed spiral ducts in offices, restaurants, loft condos, and sports venues are very popular,” he said. manufactures spiral ductwork, and Chris Van Rite, vice president of sales for the company, sees that product group as one that is certainly growing in popularity. People have gotten over the misconception that it is a temporary fix.” SPIRAL AND FLEXIBLE DUCTWORK Really seeing some of the longevity that we have with fiber products is huge. “Now, everyone understands it and accepts it as a standard.
“I’ve been in the business for close to 20 years, and when I started out, people just weren’t familiar at all with fiber ducts,” Kaufmann said.
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