Do your own calculations and compare them to our chart – or use the chart for quick, accurate calculations for duct size based on CFM needed for a room. One size is given for r… 展开

CFM, Maximum Friction Rate and Maximum Velocity – what are these? How are they … 展开

Here again are the important pieces of the sizing puzzle: Home Square Footage –Find this information on a blueprint, closing documents or by measuring it yourself using length x wi… 展开

This is complex and technical information that many HVAC technicians struggle to grasp – and wouldn’t accurately calculate without specialized ductwork sizing software. While … 展开