1FC-UB0-LGB IQAir .
The GCX Multigas is the top seller for people controlling multiple chemical sensitivity (MCS).
The GCX Multigas offers 75% more filtration media, 20% more airflow and longer filter service life than the GC Multigas. With its advanced filter cartridge design, the GCX MultiGas performs like a professional gas mask to maximize capture of a wide spectrum of molecules.