Austin Air Allergy Machine (HEPA) Replacement Filter FR405 BLACKReplacement filter for the Austin Air Allergy Machine. The Austin Air Allergy Machine was developed specifically for people with asthma and allergies. Its unique design increases air flow, filtering allergens from the air immediately. In clinical trials the Austin Air Allergy Machine was shown to dramatically reduce hospital visits for young asthmatic children. All standard size units are interchangeable with all standard size filters. So, if you

It features True HEPA

The 90504AM SEBO X4 Boost also alerts you when there is a clog

The light shuts off when the condition is corrected

and a brushroll jam indicator

and floor tool

Fits Some Sanitaire

5-inch horizontal cleaning profile that fits under beds and furniture

Legacy (not current legacy plastic model)

It has four-level manual height adjustment

durability and cleaning effectiveness

Please Note: This is not a replacement for the hose which is fitted to the machine

Includes a crevice tool and dusting brush/upholstery tool