At a minimum, use 3-inch wide hanging straps or metal bands to cradle the duct. Duct Saddles are a premium product you could also use that works well for supporting flexible ducts. Another common ...

the Fourth Edition of SMACNA’s HVAC Duct Construction Standards – Metal and Flexible represents the state of the art in sheet metal duct fabrication and installation requirements. As the sole American ...

Q We had to put a new furnace in our home and they put in a flexible tube from the outside to the furnace. It was to supply fresh air for the furnace, but it seems to me like having an open window ...