Air Vacuum Corporation is the industry's innovator and leader on "hoseless"​ and 100% vertical & horizontal airflow engine exhaust removal. The AIRVAC 911® Engine Exhaust System utilizes the natural upward movement of air through its unique "coanda"​ airflow pattern. The system eliminates the pockets of stagnant air that horizontal only units may create. The AIRVAC 911® Engine Exhaust System creates a uniform ceiling to floor movement of air and without any heavy unidirectional drafts. In many applications, one AIRVAC 911® unit will perform more effectively than two horizontal type units and our multi unit installation approach simulates a sprinkler fire suppression system by addressing the whole apparatus area Read more