At a state-of-the art factory producing special glass and mirrors for the aircraft industry we installed these great CleanFlow HEPA filters. The vacuum glass laminating machine is protected as surrounding air is forced through the CleanFlow HEPA filter box before it enters the machine. Also a newly build clean room is equipped with CleanFlow HEPA ceiling panel filters. And finally CleanFlow melt blown filter cartridges are used in the ultra-sonic cleaning bath. Highest levels of purity are guaranteed using our quality filters.