These 20x20x4 White-Rodgers (FR1600M-111) replacement air filters are specifically built to substitue for the OEM White-Rodgers 20x20x4 filters. Our air filters are MERV rated to ASHRAE 52.2 test classifications ensuring that our filters will capture dust as good or better than the original brand part number (FR1600M-111) air filter. Our air filters have the option of Odor Ban odor eliminating carbon technology. *Name brands are used for air filter style identification purposes only.
- 20 x 20 x 4 nominal size.
- 19-1/2 x 19-1/2 x 3-3/4 actual size.
- Replaces White-Rodgers brand 20x20x4 part number: FR1600M-111.
- Envaero brand by Quality Filters.
- Specifically designed to replace the original manufacturer filter.
- Filters framed and preassembled for ease of intallation. (Non-expandable, no end caps needed, etc.)
MERV rated to ASHRAE classifications.
- Option of Odor Ban odor eliminating carbon-inlayed material.
- 2 filters to a case.