Austin Air F400B Standard Replacement Pre-Filter, Large - White

We are the only manufacturers to have our products designated as Medical Grade Air Purifiers. We are the only manufacture to successfully reduce asthma attacks and respiratory problems in a clinical trial conducted by the medical community and recognized hospitals. Johns Hopkins Hospital has chosen our medical grade air purifiers to conduct four clinical trials. We were selected by the Federal Government to provide the emergency air purifiers to the citizens of Anniston, Alabama during the destruction of chemical weapons.

• Replacement Pre-Filter

• Color: White
• Size: Large
• Dimesions: 1" L