Filterbuy 21x21x1 Air Filter, MERV 13 (4-Pack)
Filterbuy 21x21x1 pleated air filters with MERV 13 media for efficiency and air quality. Customers note improved air quality and easy installation, with mixed opinions on size and build
Highlights
- 98% dust capture potential
- universal 21x21x1 replacement
- MERV 13 performance
Pros
- MERV 13 filtration
- Electrostatic pleated media
- Universal compatibility
- Easy to install
- Made in USA
Cons
- Size may vary from advertised
- Mixed build quality feedback
Best For
Features
- UNIVERSAL COMPATIBILITY 21x21x1 replacement air filters for your furnace
- air conditioner
- or heat pump enhance HVAC system efficiency and support a healthy lifestyle (actual size 20. 88" x 20. 88" x 0. 75")
- MERV 13 PERFORMANCE Protect your home or business from germs
- bacteria
- and more with MERV 13 synthetic media (comparable with MPR 1900 & FPR 10) that captures 98% of dust without restricting air flow
- LASTING FILTRATION Electrostatically charged media with 16 pleats per foot traps more microscopic particles and lasts 3x longer than fiberglass models (replace every 90 days for best results)
- SUPERIOR CONSTRUCTION Easy installation beverage board frames with dual wire backing outperform basic cardboard designs by improving durability and resisting extreme temperatures
