This 20x21x5 Emerson (F825-0337/F8110321) compatible air filters are specifically built to substitue for the original manufacturer Emerson 20x21x5 filters. Our filters are MERV graded to ASHRAE 52.2 test ratings assuring that our air filters will operate as good or better than the OEM part number (F825-0337/F8110321) filter. Our air filters have the option of Odor Ban odor isolating carbon-inlayed technology. *Trade names are listed for air filter substitution identification purposes only.
- 20 x 21 x 5 nominal size.
- 20-3/4 x 20-5/8 x 5 actual size.
- Replaces Emerson brand 20x21x5 part number: F825-0337/F8110321.
- Envaero brand by Quality Filters.
- Engineered to substitute for the name brand filter.
- Preassembled in frame for ease of installation. (No end caps needed, don't need expanded with combs, etc.)
MERV rated to ASHRAE grades.
- Option of Odor Ban odor reducing carbon material.
- 2 air filters to a case.