The Air Filter Cap for Storz & Bickel Volcano is a component placed at the bottom of the Hot Air Generator. It serves as a cover for the interchangeable air filter. This Original Equipment Manufacturer (OEM) part is specifically made to be used solely with the Volcano vaporizing units. The air filter cap is simple to use and ensures the air filters always stay in the proper position. This product also helps you reduce vent balloon fill time. In addition, it helps address strong airflow needs. Each order includes 1-piece air filter cap.