Now add two new items to your pile: duct tape and plastic. After the federal government recently elevated the national threat level to "orange'' for a high risk of a terrorist attack, one emergency ...

A new, bend-and-stay type of flexible plastic duct features an interlocking construction. According to the manufacturer, Pliaduct® is a 100 percent rigid, self-supporting PVC duct with a ribbon-lock ...

If you live in a cold climate like Minnesota, I recommend plastic. Why would someone want metal? It gives you a smooth interior, which means less air turbulence, which means more airflow. The end.

Let me begin by saying I’m as concerned about this newest terrorist alert as the next person, unless the next person happens to live in New York or Washington, where the level of concern is a good ...