[Editor’s note: When we last visited with lead installer John and his helper Charlie (The NEWS, March 5, 2007), they had just learned the hard way that there’s a lot more to sealing ducts than just ...

Spiral Duct Manufacturers Association (SPIDA) members often fabricate an inventory of standard lengths of round spiral ducts. These are fabricated not only for their own use, but may also be inventory ...

Duct routing looks simple on drawings, but once construction starts, it becomes one of the most challenging coordination tasks in a building project. Engineers design ducts for performance, ...

Pain is the most distressing symptom of chronic pancreatitis. Although the pathogenesis of pain is still poorly understood, an increase in intraductal pressure may be the dominant factor. The ...