This replacement filter is for the Austin Air Bedroom Machine and includes a pre-filter.

The Bedroom Machine™ addresses the complete spectrum of air cleaning, removing sub-micron particles, noxious gases and chemicals. Austin Air’s 360-degree intake system draws air into all sides of the The Bedroom Machine™, passing it through a 5-stage filter.

The result, more clean air delivered faster and more efficiently than any other air cleaner on the market.

• STAGE 1 - Large Particle Pre-filter • Removes particles easily seen by the naked eye (e.g. dust, hair and pet dander)  
• STAGE 2 - Medium Particle Pre-filter • Removes small to medium size particles (e.g. molds, spores and pollen)  
• STAGE 3 - 15 lbs of Proprietary Carbon Blend • Removes chemicals, gases and odors (e.g. sulfuric acid and ammonia)  
• STAGE 4 - 60 ft. of Certified HEPA • Removes 99.97% of all particles larger than 0.3 microns.  
• STAGE 5 - HEGA Carbon Cloth • High Efficiency Gas Arrestance

Compatibility: This replacement filter is interchangeable with all standard sized Austin Air replacement filters and is compatible with all standard sized Austin Air models. The Bedroom Machine replacement filter can be used with the HM-400 HM-405, HM-410, and the HM-450.