The Extech AN300-C is an optional accessory kit designed to simplify airflow measurements on common HVAC duct sizes when used with the AN300, AN310, or AN320 Large Vane Thermo-Anemometers. It includes a round cone (8.26” / 210mm diameter) and a square funnel (13.6” / 346mm) that eliminate the need for manual area calculations—enabling quick, accurate CFM/CMM readings directly from the meter.
- Compatible with Extech AN300, AN310, and AN320 Large Vane Anemometers
- Includes one round cone (8.26” / 210mm) and one square funnel (13.6” / 346mm)
- Eliminates manual duct area input—meter auto-calculates airflow based on preset adapter dimensions
- Streamlines HVAC testing for standard register and grille sizes
- Durable, lightweight construction for field use