Filterbuy 18x21x1 MERV 11 air filter 2-pack
Electrostatic pleated HVAC air filters with MERV 11 for allergen defense. Customers note good quality, easy installation, and improved air quality; size may vary in fit
Highlights
- MERV 11 synthetic media
- effective dust capture
- easy installation
Pros
- universally compatible 18x21x1 size
- MERV 11 filtration
- easy to install
- good build quality
- improves air quality
Cons
- size fit feedback varies
- size may be smaller than expected
Best For
Features
- Universal 18x21x1 replacement filters for furnaces, air conditioners, or heat pumps
- MERV 11 filtration captures 95% of dust and allergens with synthetic media
- Electrostatically charged 14 pleats per foot extend life, replace every 90 days
- Durable beverage board frame with dual wire backing for temperature resilience
- Made in the USA with industrial-grade, recyclable materials
