Austin Air HealthMate Plus HM450 replacement filter contains True HEPA filter and Carbon canister filter with Superblend adsorbent assembly for Austin Air HealthMate Plus HM450 air purifier.
Austin Air HealthMate Plus True HEPA and activated carbon canister filters are combined together in one filter assembly.
Austin Air HealthMate Plus filter assembly comes with a pre-filter of matching color:

• Black for units in Black and Midnight Blue colors
• White for units in White and Sandstone colors

True HEPA filter traps 99.97% of all microscopic airborne contaminants down to 0.3 micron in size.
Activated carbon canister contains 15 lbs. of specialty Superblend adsorbent for effective removal of VOCs, ammonia, formaldehyde and many other specific chemicals.
The Filter's Lifetime: 2 to 5 years (under normal residential conditions).
The filter assembly has to be replaced when either the True HEPA filter or Carbon canister filter reaches the end of its lifetime.
The filter assembly is covered by the 5-Year Pro-rated manufacturer's warranty (applicable to units used under normal residential conditions only).