Our 21x24x5 Rheem/Ruud (Protech 540014) replacement air filters are specifically engineered to substitue for the name brand Rheem/Ruud 21x24x5 filters. Our air filters are MERV classified to ASHRAE 52.2 test ratings assuring that our air filters will filter as good or better than the original brand part number (Protech 540014) filters. These air filters have the option of Odor Ban odor capturing carbon-inlayed material. *Name brands are listed for filter substitution identification purposes only.
- 21 x 24.5 x 4. 5 nominal size.
- 20-3/4 x 24-1/4 x 4-3/8 actual size.
- Replaces Rheem/Ruud brand 21x24x5 part number: Protech 540014.
- Envaero brand by Accumulair.
- Designed to substitute for the OEM filter.
- Filters framed and preassembled for ease of intallation. (No end caps needed, don't need expanded with combs, etc.)
MERV graded to ASHRAE grades.
- Option of Odor Ban odor isolating carbon-infused properties.
- 2 filters to a case.