Aerostar 21.5x21.5x1 MERV 11 furnace filter
Pleated furnace & air conditioner filter filtering dust, pollen, mold and more. Customers note easy installation and effective filtration, with mixed feedback on exact size fit
Highlights
- MERV 11 filtration
- pleated design for small particles
- compatible with furnace and AC systems
Pros
- easy to install
- effective filtration for dust and allergens
- fits furnaces and AC units
Cons
- size may vary vs advertised
- mixed fit feedback
Best For
Features
- Nominal size 21 1/2x21 1/2x1; actual size 21 1/2"x21 1/2"x3/4"
- Filters microscopic particles including lint, dust mites, spores, pollen, pet dander, fine dust, smoke
- Comparable to MPR 1000–1200 and Honeywell Allergan Plus FPR 7
- Designed for easy installation and a cost-effective step toward a healthier home environment
- Pleated furnace and air conditioner filter with MERV 11 rating
