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Austin Air  |  SKU: FR405B

Austin Air Allergy Machine Standard Replacement Filter

$339.99 USD

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Description

Austin Air Allergy Machine Standard Replacement Filter

The Austin Air Allergy Machine Standard Replacement Filter is a complete replacement filter pack designed for the larger, standard-size Allergy Machine. It includes the pre-filter, HEPA filter, and HEGA carbon cloth needed to restore the purifier's filtration performance. The filter is also identified by Austin Air's internal part number FR405.

Its 4-stage filtration system combines progressive particle filtration with Medical-Grade HEPA and Military-Grade HEGA carbon cloth. The HEPA stage captures fine airborne particles, while the HEGA layer provides adsorption of gases, odors, and chemical pollutants.

This replacement filter is intended for standard-size Austin Air units and is especially important for older units manufactured before 2000, which the source specifies should use the Allergy Machine filter. It is not compatible with Junior-size units or the Austin Air "it" Personal Air Purifier.

The filter is available with a black or white pre-filter to match the purifier's exterior. The black option is intended for darker units such as Black and Blue, while the white option is intended for White, Sandstone, and Silver units.

Features

  • Complete replacement filter pack
  • Designed for standard-size Austin Air Allergy Machine units
  • Austin Air part number FR405
  • 4-stage filtration system
  • Large particle pre-filter
  • Medium particle pre-filter
  • Medical-Grade HEPA filtration
  • Military-Grade HEGA carbon cloth
  • 60 sq. ft. HEPA filtration
  • 99.97% particle filtration down to 0.3 microns
  • 99% particle filtration down to 0.1 microns
  • Helps capture airborne allergens and fine particles
  • Helps reduce gases, odors, and chemical pollutants
  • Designed for standard-size units
  • Available with black or white pre-filter
  • Long-lasting filter designed for approximately 5 years of normal use

4-Stage Filtration

Stage Filtration Function
1 Large Particle Pre-Filter Captures larger airborne particles
2 Medium Particle Pre-Filter Captures smaller airborne particles such as pollen and mold spores
3 Medical-Grade HEPA Captures fine airborne particles, including allergens, bacteria, viruses, and mold spores
4 Military-Grade HEGA Carbon Cloth Adsorbs gases, odors, and chemical pollutants

Specifications

Specification Details
Product Type Replacement Filter
Compatible Unit Austin Air Allergy Machine
Filter Size Standard
Filter Part Number FR405
Filtration Stages 4
HEPA Filter Area 60 sq. ft.
HEPA Efficiency 99.97% down to 0.3 microns
Ultra-Fine Particle Efficiency 99% down to 0.1 microns
HEGA Military-Grade HEGA Carbon Cloth
Stage 1 Large Particle Pre-Filter
Stage 2 Medium Particle Pre-Filter
Stage 3 Medical-Grade HEPA
Stage 4 Military-Grade HEGA Carbon Cloth
Filter Life Approximately 5 years under normal use
Black Filter Pack FR405A
White Filter Pack FR405B
Junior Compatibility Not compatible
Austin Air "it" Compatibility Not compatible
Older Unit Compatibility Required for units manufactured before 2000

The Air Purifier Store specifically identifies FR405 as the Allergy Machine filter and states that units manufactured before 2000 must use this filter.

Options and SKU Numbers

Color SKU Recommended Unit Colors
Black FR405A Black, Blue
White FR405B White, Sandstone, Silver

Important Ordering Information

  • This is the standard-size Allergy Machine filter, not the Junior filter.
  • Verify the purifier's model and filter type before ordering.
  • Units manufactured before 2000 must use the FR405 Allergy Machine filter according to the product source.
  • The filter is not compatible with Junior-size Austin Air units.
  • The filter is not compatible with the Austin Air "it" Personal Air Purifier.
  • Standard-size Austin Air filters are generally interchangeable among compatible standard units, but older units have specific filter requirements.

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