The Sheet Metal and Air Conditioning Contractors’ National Association has released a construction application for Apple and Android mobile devices.

 Created to be used in conjunction with the organization’ HVAC Duct Construction—Metal and Flexible manual, SMACNA officials say the app helps simplify the process of finding construction options for rectangular duct with dimensions up to 120 inches.

The construction app is available in Apple or Google app stores for $12.99. More information on the manual can be found at