Why — other than “that’s the size of the hole in the unit”— did you need that 96” x 32” duct anyway when a 56” x 56” square or 60” round would have carried the air with the same friction loss? It’s ...

Fri, 18 Nov 2011 16:01:00 GMT — A Central Square couple is facing charges after a child was bound to a wooden chair with duct tape. Oswego County Sheriff's deputies say 33-year-old Matthew Roof ...

Ed Smylie, the NASA official who led a team of engineers that cobbled together an apparatus made of cardboard, plastic bags and duct tape that saved the Apollo 13 crew in 1970 after an explosion ...

In SMACNA’s duct system design manual, the association says that round ductwork’s cost is about 67 percent of the cost of square or rectangular ductwork. As the rectangular duct aspect ratio increases ...