AirPura Whole house Pre-Filter 4-pack is AirPura Standard Polyester based pre-filter replacement.
AirPura whole house pre-filter is the first stage of air filtration system.
The pre-filter fits all AirPura whole house air purifiers, except for the model AirPura T600W, which employs the Tar-barrier pre-filter.
The pre-filter traps large dust and dirt particles such as: lint, hair, soil particles, etc.
The pre-filter protects fine True HEPA filter from faster contamination and helps extend its lifetime.
The pre-filter can be vacuumed right through the metal mesh of the air purifier housing with a soft brush.
The pre-filter has to be replaced with new one when it gets very dirty or ruined.
The pre-filter's lifetime - up to 12 months.