When Spiro International SA opened an outpost for selling its Spiro Tubeformer machines in the United States, the move signaled spiral duct’s burgeoning popularity in the U.S. duct manufacturing industry. Decades later, spiral duct is more popular than ever thanks to the efforts of the Spiral Duct Manufacturers Association(SPIDA).

Why this list of five exposed duct installations have been some of our favorite stories to tell. 

The Spiral Duct Manufacturers Association was formed to promote the use of round duct, spiral duct (spiral pipe) and flat oval duct through education and research informing the public of its advantages.

Inside Midwest Metal Products' evergrowing company. 

The project consists of the renovations of nine free-standing buildings, the partial demolition, renovation and connection of the gymnasium, auditorium and an instructional building with more than 55,000 square feet of new construction. 

Using building information modeling (BIM) software from Technical Sales International Inc., Walsh Mechanical Contractors' estimating and computer-aided drafting departments were able to ensure a project was completed from the initial bid pro-posal to the turnover of the building to the owner. 

Much of the character of the original building is being maintained. However, the HVAC system is brand new, and will remain exposed.

Dixie Metal Products LLC of Memphis, Tennessee, highlights two large-scale installations of spiral ductwork. 

From initial planning through final installation and on to efficient operation by the customer, round ductwork provides the best overall optimized solution. Let’s take a look at the major project steps and observe how spiral duct  — aka “pipe” — can provide benefits throughout the life cycle of a building project.

Canadian school features lined oval ductwork.