Austin Air Bedroom Machine HM402 replacement filter contains HEPA filter and Carbon filters for Austin Air Bedroom Machine air purifier.
Austin Air Bedroom Machine replacement filter is a combination of three filters merged together in a single piece filter assembly:

• True HEPA filter
• HEGA - High Efficiency Gas Adsorption Lightweight filter
• Superblend Carbon Filter Canister
  

True HEPA filter contains 60 sq. ft. of 99.97% efficiency True HEPA media for trapping microscopic allergens and dust down to 0.3 micron in size.
The activated carbon canister contains 15 lbs. of specialty Superblend adsorbent for removal of VOCs and specific chemicals.
The High Efficiency Gas Adsorption (HEGA) filter ensures a speedy removal of gaseous chemicals.
Austin Air Bedroom Machine replacement filter comes with a PermaFilt pre-filter of a matching color:

• Black - for units in Black or Midnight Blue colors
• White - for units in Sandstone or White colors

Austin Air Bedroom Machine filter's lifetime: 2 to 5 years (under normal residential conditions).
Austin Air Bedroom Machine filter assembly is covered by a 5-Year Pro-rated manufacturer's warranty.