Our 20x20x4 White-Rodgers (FR1600M-108) compatible filters are specifically designed to replace the original brand White-Rodgers 20x20x4 filters. Filter Hut filters are MERV tested to ASHRAE 52.2 test grades ensuring that our air filters will operate as good or better than the original brand part number (FR1600M-108) air filter. Our filters are available in Odor Ban odor reducing carbon media. *Trade names are listed for air filter substitution 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-108.
- Quality Filters Envaero brand.
- Specifically designed to substitute for the name brand filter.
- Filters framed and preassembled for ease of intallation. (No end caps needed, don't need expanded with combs, etc.)
MERV rated to ASHRAE standards.
- Option of Odor Ban odor capturing carbon media.
- 2 filters to a case.