Replacement Pre-Filter
The Austin Air Large Pre-Filter (Part #F400B) is a replacement Permafilt wrap designed to capture large airborne particles like dust, hair, and pet dander for standard-size Austin Air purifiers.
- Price: Typically around $35 to $75 depending on the retailer.
- Compatibility: Fits all standard-size Austin Air models including the HealthMate (HM400), HealthMate Plus (HM450), Allergy Machine (HM405), Bedroom Machine (HM402), and Pet Machine (HM410).
- Function: Wraps around the main HEPA filter to prolong its lifespan. It can often be vacuumed from the outside of the unit during regular maintenance before needing a full replacement.
- Color: White (designed for white and sandstone units
