Extech AN300-C Airflow Cone and Funnel Adapter Kit

Extech AN300-C Airflow Cone and Funnel Adapter Kit for AN300, AN310, AN320 is an accessory kit for airflow measurements for common large size ducts. The meter has a cone and square preset. With this optional kit it would allow HVAC technicians to be freed from the hassle of calculating dimensions and allow for quick and easy air flow measurements for these common duct sizes.