Tag Archives: SMACNA

Duct construction app

March 3, 2014

The Sheet Metal and Air Conditioning Contractors’ National Association (SMACNA) has released an app for the third edition of its manual, HVAC Duct Construction Standard—Metal and Flexible. The app provides a simplified process for finding construction options for rectangular ducts with dimensions up to 3048 mm (120 in.) for applications discussed in the manual. It provides options for internal and external reinforcements. Internal options are limited to electrical metallic tubing (EMT) conduit tie rods, and … Continue reading Duct construction app

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