Aerostar MERV 11 Pleated Furnace Filter 20x21x1 (Actual 19 7/8 x 20 7/8 x 3/4) - 6 Pack
Aerostar pleated furnace filter with MERV 11 efficiency for dust, pollen, and small particles. Customers praise easy installation and effective filtration, though size may vary by unit
Highlights
- MERV 11 efficiency
- actual size 그대로
- easy installation
Pros
- pleated filtration for small particles
- easy to install and replace
- constant size compatibility with many furnaces
- effective at reducing dust and pet hair
- value when purchased as a pack
Cons
- actual size may differ slightly from nominal
- mixed feedback on exact sizing
Best For
Features
- Actual size 19 7/8" x 20 7/8" x 3/4" for a 20x21x1 nominal filter
- Filters particles including lint, dust mites, spores, pollen, pet dander, fine dust, and smoke
- Compared to MPR 1000–1200 and FPR 7 performance ranges
- Designed for simple installation and cost-effective home air quality improvement
