These 20x24x5 General Aire (4001) style air filters are specifically engineered to replace the original brand General Aire 20x24x5 filters. Filter Hut's filters are MERV classified to ASHRAE 52.2 test standards assuring that our filters will filter as good or better than the OEM part number (4001) air filters. Our air filters have the option of Odor Ban odor filtering carbon-infused media. *Trade names are listed for air filter substitution identification purposes only.
- 20 x 24 x 5 nominal size.
- 19-9/16 x 24-1/16 x 4-3/4 actual size.
- Replaces General Aire brand 20x24x5 part number: 4001.
- Envaero brand by Quality Filters.
- Engineered to substitute for the original manufacturer filter.
- Preassembled in frame for ease of installation. (No need for extra combs, end-caps, etc.)
MERV classified to ASHRAE ratings.
- Available in Odor Ban odor filtrating carbon-infused properties.
- 2 air filters per case.