Unlike other exhaust removal systems, the AIRVAC 911removes both exhaust particulate as well as gases emitted from diesel engines. The AIRVAC 911accomplishes the removal of the diesel contaminants without cumbersome hoses or vehicle attachments. The unique ceiling hung filtration system is installed in between bays without interfering with day-to-day activity. The AIRVAC 911does not require any manual operations, vehicle retrofits, or building modifications, even with low ceilings and limited access. This results in a hassle free and self-sufficient system that automatically removes engine exhaust quickly and quietly. The AIRVAC 911 system is 100 percent effective for a clean and safe environment. This hands-free system allows for personnel to focus on what is truly important and does not interfere with incident response times. Additionally, the AIRVAC 911is the only system that will remove engine exhaust backwash that re-enters and migrates throughout the station as vehicles leave and return from an incident. For more information go to http://www.airvac911.com/home.html