20x20x4 AC Furnace Filter Replacement FC100A1011
Replacement 20x20x4 furnace filter with MERV 11 media; efficient particle capture down to 0.3 micron. Easy installation and maintenance every 6-12 months. One customer note mentions mixed value perception and occasional crushed packaging
Highlights
- MERV 11 filtration
- easy in-and-out media replacement
- low-maintenance replacement
Pros
- high-efficiency MERV 11 media
- captures small particles (0.3 micron)
- easy installation
Cons
- mixed value perception
- packaging may arrive crushed
Best For
Features
- Replacement filter size: 20x20x4 inches (actual 19.94 x 19.75 x 4.38)
- MERV 11 efficiency captures particles down to 0.3 microns
- Low-maintenance design; replace every 6–12 months
- Compatible with 20x20x4 systems including Honeywell, Aprilaire, Space-Gard, and Trion models
- Includes Homequip disposal bag for proper disposal of old filters
