This article originally appeared in the Spiral Duct Manufacturers Association insert in the January 2017 issue of SNIPS magazine. There are several factors that a designer should consider when ...

Quality spiral duct, which includes round, oval, and flat oval configurations, exhibits a very high level of air tightness. Many leading manufacturers of sheet metal spiral duct can guarantee a line ...

Round ductwork in most convenient diameters (2 to 6 inches) is probably the trimmest plumbing to use for this kind of underhood air fare. Hose clamps, large tie wraps, or, ...

While this is more common on round ductwork, it can also be used on rectangular ducts. The material-only cost of 1.5-inch duct wrap is, on average, $1.00 per square foot. Spray Foam.

Crawl space insulation might not be at the forefront of your mind but forgetting about it is an expensive mistake.