Filter Hut's 21.5x21x5 Honeywell (TRN2121T1) replacement air filters are specifically designed to replace the name brand Honeywell 21.5x21x5 filters. These air filters are MERV tested to ASHRAE 52.2 test grades establishing that our air filters will filter as good or better than the original brand part number (TRN2121T1) air filter. These filters also come in Odor Ban odor filtering carbon technology. *Brand names are listed for air filter substitution identification purposes only.
- 21-1/2 x 21 x 5 nominal size.
- 21-1/16 x 19-1/2 x 4-15/16 actual size.
- Replaces Honeywell brand 21.5x21x5 part number: TRN2121T1.
- Envaero brand by Quality Filters.
- Designed to replace the name brand filter.
- Filters framed and preassembled for ease of intallation. (No end caps needed, don't need expanded with combs, etc.)
MERV classified to ASHRAE grades.
- Option of Odor Ban odor filtering carbon-infused properties.
- 2 air filters to a case.