Duct Size Chart
Flex duct 05 on most metal duct calculator round metal pipe 06 on most metal duct calculators field duct sizing chart rectangular sheet metal duct 07 on most metal duct calculators.
Duct size chart. Select the duct size from the table that can carry that volume of air 3. If desired airflow exceeds the cfm rating increase to the next duct size 4. Listed cfm is based on typical field results and may vary install dampers 5.
How to use duct chart. While a duct sizing calculator built for a specific type of ductwork is the best possible method for sizing ducts the attached chart can be used in most single story homes with a centrally located unit and reasonable length duct runs. This equal friction method of duct sizing should be adequate for normal residential furnace heating and air conditioning applications.
Duct system sizes and airflow quick chart created date. Identify the volume of air that will be passing through the duct 2.