Filterbuy 21x21x1 MERV 13 Air Filter (6-Pack)
21x21x1 electrostatic pleated filters with MERV 13 media for dust, germs, and pollen. Customers note solid build and dust collection, with mixed opinions on size fit
Highlights
- MERV 13 performance
- universal 21x21x1 compatibility
- electrostatic pleated media
Pros
- MERV 13 dust capture
- electrostatic pleated design
- sturdy construction
- universal compatibility for furnace, AC, or heat pump
- size spec close to actual provided
Cons
- size reception mixed (fit issues reported)
Best For
Features
- Universal 21x21x1 replacement filters for furnaces, air conditioners, or heat pumps
- MERV 13 synthetic media captures dust and germs with electrostatic filtration
- Electrostatically charged with 16 pleats per foot for extended lifespan
- Durable beverage board frames with dual wire backing resist extreme temperatures
- Made in the USA from recyclable materials with 20.88 x 20.88 x 0.75 actual size
