Last month, members of the Spiral Duct Manufacturers Association (SPIDA) were in Dallas, Texas, for the organization's annual meeting.  In conjunction with the meeting, Brennan Hall of Johns Manville, hosted a tour of the company's Cleburne, Texas, plant. 

The 415,000-square-foot manufacturing facility is where fiberglass duct liner, duct board and Spiracoustic Plus round duct liner are produced and includes a 280,000-square-foot warehousing facility.

SPIDA is a nonprofit organization promoting the use of spiral-seamed round and flat-oval duct through research and education from some of the leading experts in the spiral duct industry. Its members — which include duct manufacturers, suppliers and installers — represent residential, industrial and commercial markets from all over the country.